题目内容
She knows so much about England. She ___ there before.
A. must be B. must live
C. must have been D. must have lived in
【答案】
C
【解析】略
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题目内容
She knows so much about England. She ___ there before.
A. must be B. must live
C. must have been D. must have lived in
C
【解析】略