题目内容

________ he ________ an hour in doing his homework yesterday?

A. Has; spent  B. Has; spend     C. Did; spend     D. Did; spent

 

答案:C
提示:

花费有许多结构,注意不同的结构有不同的用法,spend的用法是:sb spend money/time on sth/(in) doing sth

 


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