问题
选择题
— What time do you expect me back, Mum?
— Say, _____ half an hour. [ ]
A. at
B. before
C. in
D. for
答案
答案：C
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— What time do you expect me back, Mum?
— Say, _____ half an hour. [ ]
A. at
B. before
C. in
D. for
答案：C