—What is Simon doing?—He_ his room.A...

2023-01-06

【题目】—What is Simon doing?
—He________ his room.
A.cleans
B.is cleaning
C.clean

【答案】B
【解析】句意:—西蒙正在干什么?—他正在打扫房间。A. 打扫(第三人称单数形式);B. 正在打扫;C.吃(动词原形)。根据问句判断该句子是现在进行时,其构成是“主语+be+doing+其它”,故选B。