题目内容
【题目】I visit three stores before ________ a T-shirt.
A. buy B. bought C. to buy D. buying
【答案】D
【解析】
句意:在买一件T恤之前,我去看了三家商店。A. buy动词原形;B. bought过去式;C. to buy动词不定式;D. buying动名词或分词。before介词,“在……之前”,后跟动词-ing形式,故答案为D。
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