B1Grammarsentence-correction
Choose or write the corrected version.
She explained me the problem
Choose mentally first, then reveal the target.
Generated question vault
Sentence correction
A focused deck from one question mechanic. Answer first, reveal the target pattern, then mark whether you had it. This turns the generated bank into real daily reps without pretending draft prompts are final diagnostics.
Families
Core grammar control 1,500Vocabulary and collocation depth 1,500Business writing and tone 1,200Listening and fast speech 1,200Natural English usage 1,200Visual and simulation mechanics 1,200Media and pragmatics mechanics 1,000Pronunciation clarity 900Reading inference 900Real-life dialogue 900Exam readiness 700
Mechanics
Gap fill and typed micro-answer 1,300Multiple choice with targeted distractors 1,150Dialogue completion 1,100Matching pairs 1,075Listening choice 1,033Reading inference 833Naturalness ranking 800Short writing response 634Read aloud or repeat 600Synonyms finder 542Sentence correction 500Minimal pair recognition 300Scenario response 300Crafter 240Hidden object vocabulary 240Instruction following 240Shop simulator 240Sorter 240Movie scene understanding 167Pronunciation sniper 167Swiper natural/unnatural 167Emotion context 166Punchline 166