The correct answers are She needs to check in for her flight, She has to go through security, and She should board the plane when her group is called.
At the airport, we "check in" (not "control in"), "go through security" and "board the plane." The correct term is "passport control" as a place, but you "go through" passport control — you don't "control your passport."
Phrasal verb
If you've ever read I ran into my old teacher and wondered why anyone would run into a person on purpose, welcome to phrasal verbs. They're idioms hiding in plain sight — short verb-plus-particle combinations whose meanings don't match the words you see. Miss them and English films, news, and casual conversation feel half-translated.
A phrasal verb combines a verb with a particle, a preposition, or both, forming a unit with a non-literal meaning: give up, put up with, come across. They're the single biggest source of native-sounding fluency at intermediate level.
Preposition
If you've ever written I'm interested on you (should be in) or I'm good on football (should be at) — you've hit prepositions' main pitfall. Their choice is mostly idiomatic, not logical, and rarely matches what your native language does. Memorising the right preposition for each common verb and adjective is what stops your speech from sounding subtly off.
A preposition is a small word linking a noun or noun phrase to other parts of the sentence: in, on, at, to, from, with. Marks time, place, manner, or abstract relationships. Choice is largely idiomatic, especially in fixed combinations (depend on, good at, afraid of).
Verb
If grammar feels overwhelming, the fix is almost always to focus on verbs first. They carry the action, the time, the mood, and the voice — a single verb form decides whether your sentence reads as past or present, fact or hypothetical, active or passive. Get verbs solid and the rest of grammar suddenly looks much smaller.
A verb expresses action, state, or occurrence — the engine of every English sentence. Most verbs have five forms (base, -s, past tense, past participle, -ing); be has eight; modal verbs have fewer. Verbs carry tense, aspect, mood, and voice.
Collocations
If your English vocabulary is large but your speech still sounds slightly off — do a mistake, powerful coffee, high winds blew strongly — you've hit the collocation problem. Each word is correct in isolation, but native speakers don't pair them that way. Fixing it isn't about more vocabulary; it's about learning words in their natural company.
Collocations are word combinations that habitually occur together: make a decision, strong coffee, heavy rain, highly unlikely. The grammar permits other pairings, but fluent English consistently chooses one over the rest. They're the connective tissue of natural-sounding language.
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.
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: Easy
If a textbook leaves you confused, sometimes the issue isn't the topic — it's that the practice material is layered with extra complications. Filtering by Easy strips that away. You get one rule at a time, in plain everyday language, with no trick questions. It's how you make a shaky foundation solid before stacking more on top.
The Easy difficulty tag marks beginner-level questions and challenges — typically A1 or early A2. Single-rule focus, short sentences, common vocabulary, one clear correct answer.