题目内容
【题目】I often ________the cleaning after school.Now I ________the cleaning.
A.do;doingB.am doing;do
C.do;am doingD.am doing;am doing
【答案】C
【解析】
句意:放学后我经常打扫卫生。现在我在打扫卫生。经常性的动作用一般现在时态;now常用于现在进行时态中,故答案为C。
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