— Do you still remember the day when we
题型:选择题
问题:
— Do you still remember the day when we went to the Great Wall?
— I can't remember it well, but ________ it have been sometime last year?[ ]
A. would
B. must
C. could
D. should
— Do you still remember the day when we went to the Great Wall?
— I can't remember it well, but ________ it have been sometime last year?[ ]
A. would
B. must
C. could
D. should