题目内容
— Do you still remember when we went to Nanjing?
— I cant' remember now but ________ sometime last summer?
— I cant' remember now but ________ sometime last summer?
[ ]
A. might it be
B.
could it be
C. could it have been
D. should it have been
B.
C. could it have been
D. should it have been
C
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