问题
选择题
— You speak such good 
English.Have you been abroad before?
— Yes.I ________ in Britain four years ago.[ ]
A. studied
B. had studied
C. was studying
D. have studied
答案
答案：A
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— You speak such good English.Have you been abroad before?
— Yes.I ________ in Britain four years ago.[ ]
A. studied
B. had studied
C. was studying
D. have studied
答案：A