题目内容

【题目】I usually go to school by bus, but I the bus yesterday.
A.didn't took
B.didn't take
C.not took
D.took

【答案】B
【解析】从but看出, 是没乘公共汽车,用否定句,yesterday 是一般过去时的标志,否定句用助动词 did 加not 构成,后面跟动词原形,故选B。句意是:我通常乘公交车上学,但是昨天没有乘公交车。

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