【題目】 --- Talking of travel, have you ever been to Chicago?

--- Yes. I _____ it twice while I was working in the US.

A. have visited B. visited

C. was visiting D. would visit

【答案】B

【解析】

試題分析:句意：--說(shuō)到旅行，你去過(guò)芝加哥嗎？--是的。當(dāng)我在美國(guó)工作的時(shí)候我去過(guò)兩次。根據(jù)時(shí)間狀語(yǔ)從句可知主句是介紹過(guò)去的經(jīng)歷，應(yīng)該用一般過(guò)去時(shí)，選B。

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