Which sentence uses inversion correctly?

A. Only after the meeting started the chairman announced the decision.

B. Only when the rain stopped we could leave.

C. Only when students pass all exams can they graduate.

D. Only by working hard success can be achieved.

答案解析

**Core Concept:** Grammar - Inversion rules with 'only+adverbial'. **Analysis:** Option C correctly places the auxiliary verb 'can' before the subject 'they' after 'Only when...'. **Wrong Options:** - A/B/D lack required subject-verb inversion. - A uses 'started' without inversion; B omits 'did'; D uses passive voice incorrectly. **Key Clue:** 'Only+adverbial' at sentence start triggers mandatory inversion.

正确答案：C

Which sentence uses inversion correctly?

答案解析

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