【題目】The boy was doing homework while his mother dinner.

A.cooksB.cookedC.was cookingD.will cook

【答案】C

【解析】

本題的含義為當(dāng)男孩的母親正在做飯時(shí),男孩正在做家庭作業(yè),while引導(dǎo)的時(shí)間狀語從句,和主句時(shí)態(tài)要保持一致,本題從句應(yīng)該使用過去進(jìn)行時(shí),故本題選C。

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