问题
选择题
My parents ______ Tianjin for 50 years.[ ]
A. have been in
B. have been to
C. have gone to
D. have been
答案
答案：A
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My parents ______ Tianjin for 50 years.[ ]
A. have been in
B. have been to
C. have gone to
D. have been
答案：A