问题
选择题
When I got home, my parents _____ for about an hour.[ ]
A. has got back
B. has gone back
C. had come back
D. had been back
答案
答案：D
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When I got home, my parents _____ for about an hour.[ ]
A. has got back
B. has gone back
C. had come back
D. had been back
答案：D