题目内容

---where’s Mom?

-----She’s in the kitchen. She _____the housework all morning

A.is doing B.was doing

C. did D.has been doing

 

D

【解析】

试题分析： 考查动词的时态。句意：妈妈在哪？她在厨房里。她今早上一直在做家务。根据 all morning表示一直做某事，故选D项。

考点 : 考查动词的时态

 

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