问题
选择题
— I bought a very beautiful postcard for Teachers' Day.
— Really? When _____ you _____ it?
[ ]
A. do; buy
B. will; buy
C. did; buy
D. did; bought
答案
答案：C
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— I bought a very beautiful postcard for Teachers' Day.
— Really? When _____ you _____ it?
[ ]
A. do; buy
B. will; buy
C. did; buy
D. did; bought
答案：C