题目内容

---Mum,_______ I watch TV?

---No. Unless your homework _______________.

A. could; finishes B. can; will finish

C. may; is finished D. can; will be finished

C

【解析】

试题分析：句意：--妈妈，我可以看电视吗？--不可以。除非你的作业被完成了。分析：向某人询问可以做某事吗，可以运用情态动词can/may; unless引导的时间状语从句，体现主将从现的原则，因此从句用一般现在时，作业是被完成的，因此运用一般现在时的被动语态，明确第三项正确。故选 C

考点：考查情态动词和被动语态的用法。

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