Question

【题目】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

Answer 1

【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。