Basics: Mustn't vs. Don't Have To
This challenge contains 10 questions at medium difficulty covering Basics: Mustn't vs. Don't Have To. Test your knowledge with a mix of question formats!
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Fill in the highly caffeinated fitness instructor's welcome speech by dragging the right rules into the sentences.
Welcome to the gym! Please remember that you mustn't drop the heavy weights on the floor, because the yoga class downstairs is trying to meditate. Also, relax! You don't have to run on the treadmill for an entire hour; a brisk 20-minute walk is perfectly fine for beginners!
Welcome to the gym! Please remember that you mustn't drop the heavy weights on the floor, because the yoga class downstairs is trying to meditate.
Mustn't is used when telling someone not to do something because it is a bad idea, against the rules, or disruptive.
Also, relax! You don't have to run on the treadmill for an entire hour; a brisk 20-minute walk is perfectly fine for beginners!
Don't have to means that an action is not required. You can choose to run for an hour, but it is not necessary.
Help the secret agent understand the rather alarming warning label on his new spy car. Choose the correct phrase to complete the sentence.
"You can deploy the oil slick whenever you like, but you ______ press the big red button, or the car will instantly self-destruct!"
The correct answer is mustn't.
We use mustn't (must not) to express a strong prohibition—it means "do not do this" or "it is forbidden."
Don't have to means something is optional (you can do it if you want, but it's not required), which would be a terrible instruction for a self-destruct button!
"Thanks for watching Lord Fluffington! You don't have to cook him gourmet meals; the canned food in the pantry is perfectly fine. However, you mustn't look him directly in the eyes after midnight, or he will hold a grudge for a week."
Don't have to shows that something isn't necessary. You aren't required to cook gourmet meals, because canned food works just fine.
Mustn't expresses a strict rule or warning. Looking the cat in the eyes after midnight is strictly forbidden unless you want him to be angry!
The correct answers are You mustn't touch the authentic T-Rex skull, or security will chase you! and You don't have to wear the 3D glasses if they give you a headache.
Use mustn't for strict prohibitions (things you are not allowed to do).
Use don't have to for a lack of obligation (things that are optional, meaning you can do them if you want, but it's not required).
Climbing on artifacts is forbidden, so it should be "mustn't." Tipping is optional, so it should be "don't have to."
Complete the professor's reassuring email to a highly caffeinated and stressed-out freshman.
"Please get some sleep! The supplementary reading on the syllabus is purely for fun, so you ______ read chapters 4 and 5 for tomorrow's class."
The correct answer is don't have to.
We use don't have to to show a lack of obligation. It means the action is not necessary, but it isn't forbidden either (the student can read the chapters if they want to, but they aren't required to).
Using mustn't would mean the professor is forbidding the student from doing the reading!
Help Agent 007 review the rules for infiltrating the villain's secret lair by dragging the correct verbs into the briefing notes.
Listen carefully, Agent. You mustn't press the giant red button on the control panel, or the entire volcano base will explode. On a lighter note, you don't have to wear a tuxedo to the infiltration, but it certainly does make you look dashing!
Listen carefully, Agent. You mustn't press the giant red button on the control panel, or the entire volcano base will explode.
We use mustn't (must not) to express a strict prohibition. It means "do not do this; it is dangerous or forbidden."
On a lighter note, you don't have to wear a tuxedo to the infiltration, but it certainly does make you look dashing!
We use don't have to to express a lack of obligation. It means "it is not necessary, but you can if you want to."
Read the welcome note from your eccentric new boss and choose the correct words to complete it.
"Welcome to the team! You _____ wear a suit to the office, pajamas are perfectly fine, but you absolutely _____ touch Dave's favorite coffee mug under any circumstances."
The correct answer is don't have to / mustn't.
We use don't have to to show a lack of obligation. It means something is not necessary, but you can do it if you want to (wearing a suit is optional).
We use mustn't (must not) to show strict prohibition. It means something is completely forbidden or a very bad idea (touching Dave's mug is not allowed).
"As a junior chrononaut, you mustn't interact with your past self under any circumstances, as this will destroy the universe. On the bright side, you don't have to memorize every historical date, since your temporal tablet has a built-in search engine."
Mustn't means "do not do this." Interacting with your past self is forbidden because it has disastrous consequences.
Don't have to means "it is not required." You aren't forced to memorize the dates because the tablet does the work for you.
Complete this mildly passive-aggressive roommate agreement by dragging the correct modal verbs into the blanks.
As per our new apartment rules, please note that you don't have to cook me dinner every night, though I would really appreciate it if you did. However, you mustn't eat my leftover pizza without asking, or there will be severe and immediate consequences.
As per our new apartment rules, please note that you don't have to cook me dinner every night, though I would really appreciate it if you did.
Don't have to shows that there is no obligation to do something. You are free to do it, but no one is forcing you.
However, you mustn't eat my leftover pizza without asking, or there will be severe and immediate consequences.
Mustn't shows that something is absolutely forbidden. Eating the roommate's pizza is strongly prohibited!
The correct answers are You mustn't feed my pet tarantula; she is on a very strict diet! and You don't have to iron my superhero cape; I like it a little wrinkly.
Mustn't means "do not do this" (it's a bad idea or against the rules).
Don't have to means "it is not necessary" (but you can if you really want to).
Leaving the stove on is dangerous, so it should be a strong "mustn't." Buying toilet paper isn't forbidden, just unnecessary, so it should be "don't have to."
Modal verb
If you've ever struggled with the difference between You must do this (strong command) and You should do this (advice) — or It might rain (possible) and It will rain (certain) — you've felt how much modal verbs do in English. They're how the language signals certainty, obligation, possibility, and politeness, and getting them right is what stops your speech from sounding either pushy or wishy-washy.
A modal verb is an auxiliary — can, could, may, might, must, shall, should, will, would — adding meaning around ability, permission, possibility, obligation, or speculation. Always followed by the bare infinitive (can swim, never can to swim), and never inflected for person.
English Grammar Basics
If grammar feels like a tangle of rules you can never quite remember, the fix isn't more advanced material — it's making the foundations automatic. The English Grammar Basics tag is where you do that: the building blocks every other topic stands on. Get these right and the rest stops feeling random.
It marks quizzes and explainers covering the core of English: nouns, verbs, adjectives, adverbs, prepositions, conjunctions, tenses, voice, mood, and basic sentence structure. Useful whether you're a beginner or refreshing rusty knowledge.
A2 | Elementary | Pre-intermediate
If you can order coffee, ask for directions, and tell someone what you did yesterday — but struggle the moment the conversation drifts into anything abstract — you're operating at A2. Knowing this matters: A2 is the level where most learners plateau because they reach for B2 material too early and burn out. Stay here and your foundations get unbreakable.
A2 is the elementary level in the CEFR framework, covering routine communication and the first wave of real grammar: past simple and continuous, present perfect, basic modal verbs, first conditional, and common verb-pattern rules.
Difficulty: Medium
If easy questions feel too obvious but hard questions leave you guessing, you're probably ready for Medium — the level where most real learning happens. It pushes just enough to expose the rules you don't quite have yet, without burying you in edge cases. This is where steady fluency is built, one well-aimed challenge at a time.
The Medium difficulty tag marks middle-range challenges — typically A2 to B1. One rule per question, realistic distractors, and contexts that require active thought rather than instant recognition.