【題目】I often ________the cleaning after school.Now I ________the cleaning.

A. do；doing B. am doing；do

C. do；am doing D. am doing；am doing

【答案】C

【解析】句意：放學后我經(jīng)常打掃衛(wèi)生�，F(xiàn)在我在打掃衛(wèi)生。經(jīng)常性的動作用一般現(xiàn)在時態(tài)；now常用于現(xiàn)在進行時態(tài)中，故答案為C。

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