The three of us around Europe for about a month last summer.(2012·天津)
A. travelled
B. have travelled
C. had travelled
D. travel
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(答案→)A. travelled
B. have travelled
C. had travelled
D. travel
解析：考查动词时态。句意：去年夏天，我们三人在欧洲旅行了一个月左右。根据句中的last summer可知用一般过去时。