The correct answers are The school choir sang more beautifully this year than last year. and Timmy danced the most awkwardly of all the performers.
When describing an action verb (like sang or danced), we must use an adverb (like beautifully), not an adjective (beautiful).
The superlative adverb for "badly" is irregular: it is "worst", not "most bad".
Adverb
An adverb modifies a verb, an adjective, or another adverb — adding information about how, when, where, how often, or to what degree something happens: she sings beautifully, unbelievably fast, we go there often. Many adverbs end in -ly, but plenty don't (well, fast, hard, almost).
Adverbs matter because they're how you add nuance without piling on extra clauses. Used well, a single adverb can sharpen a vague sentence (she answered → she answered honestly), but misplace one and the meaning drifts in a way native speakers immediately notice.
Comparative and superlative
The comparative form of an adjective compares two things (taller, more polite); the superlative picks out the extreme of three or more (the tallest, the most polite). Short adjectives usually take -er and -est suffixes (tall → taller → tallest), while longer adjectives use more and most (expensive → more expensive → most expensive). A handful are irregular and you simply have to memorise them: good → better → best, bad → worse → worst.
Getting comparatives and superlatives right matters because comparing is something you do constantly — and the wrong form (more taller, the most best) sounds clearly off.
A2 | Elementary | Pre-intermediate
A2 is the elementary level in the CEFR framework, sitting between A1 and B1. At A2 you can handle routine exchanges — ordering food, asking directions, making small talk — and describe your immediate environment in simple sentences.
Grammatically, A2 introduces past simple and past continuous, present perfect for experiences, basic modal verbs, and the first conditional. You're also picking up collocations and learning which verbs take gerunds vs. infinitives. Knowing your level here is the difference between confident progress and frustration: A2 material consolidates the basics; B1 will overwhelm you.
Difficulty: Medium
The Medium difficulty tag marks questions and challenges in the middle of the difficulty range — typically suitable for A2 to B1 learners. Expect a single rule with realistic distractors, longer sentences, and contexts where you have to think before answering rather than reading off the obvious choice.
Filter by Medium when you're past the absolute basics and ready to consolidate. It's the level where most lasting progress happens — easy enough that you can finish without exhausting concentration, hard enough that getting it right means you've actually understood.