题目内容
【题目】—Did they clean the house yesterday?
—________,They cleaned at five o’clock.
A.No,they didn’t
B.Yes,they did
C.No,they don’t
D.Yes,they do
【答案】B
【解析】由问句是用did问的,可知旧答只能用一般过去时来答,故排除C、D,再由后面一句话“他们是五点打扫的”判断应是肯定回答,故选B。
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