Complete the real estate agent's enthusiastic email to a plant-loving client.
You will absolutely love this property! It features a massive _____ in the backyard where you can grow tropical plants all winter.
The correct answer is greenhouse.
A greenhouse (closed compound noun) is a glass building used for growing plants. A green house (adjective + noun) simply means a house that is painted the color green. Since the client wants to grow tropical plants, they need a greenhouse!
Noun
If you've ever frozen mid-sentence wondering whether to say an information or some information, child or children, they or them — you've hit the core of how English uses nouns. Nail this down and articles, plurals, possessives, and pronoun choice all stop feeling like guesswork.
A noun is a word that names something: a person, place, thing, idea, action, or quality. Nouns are the building blocks every other part of speech bolts onto. Spot one in a sentence and you can usually predict the article, the verb form, and the pronouns that follow.
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.
Vocabulary
If you've ever known the grammar of a sentence but not the right word for what you actually wanted to say — help me, kindly, unfortunately, broke down, put up with — you've felt the limit of grammar without vocabulary. Most fluency-feel comes from word choice, not sentence structure. The Vocabulary tag is where you build that side of your English deliberately.
The Vocabulary tag groups word-focused practice — common words, collocations, phrasal verbs, idioms — across all CEFR levels from A1 to C2.
B1 | Intermediate
If you can hold a conversation about your weekend, explain why you're late, and follow a short news story without panicking — but still feel lost in fast or technical English — you're probably operating at B1. Knowing this matters: study material at the wrong level either bores you or burns you out, and B1 is the typical target for travel, casual work, and most everyday social English.
B1 is the intermediate level in the CEFR framework, where you handle everyday English independently and start combining ideas with complex sentences, passive voice, and modal verbs.
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.