You can't watch TV before ------your homework.a finish b.to finish c.finishing

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You can't watch TV before ------your homework.a finish b.to finish c.finishing
You can't watch TV before ------your homework.a finish b.to finish c.finishing

You can't watch TV before ------your homework.a finish b.to finish c.finishing
答案:C
介词before后面接动词的ing形式、

c