Itwasreadingwuxiabooksthatcostthelittleboyplentyoftime...
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问题详情:
It was reading wuxia books that cost the little boy plenty of time that he ________ doing his lessons.
A. might have spent B. must have spent
C. could have spent D. should have spent
【回答】
D
知识点:虚拟语气与情态动词
题型:选择题
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