—Do you still remember when we went to Chongqing?

—I can’t remember now but______sometime last summer?

A.could it be                        B.might it be

C.could it have been             D.should it have been

— Do you still remember when we went to Chongqing?

   —I can’t remember now but ______ sometime last summer?

A. could it be   B. might it be    C. could it have been  D. might it have been

— Do you still remember when we went to Chongqing?

   —I can’t remember now but ______ sometime last summer?

A. could it be   B. might it be    C. could it have been  D. might it have been

— Do you still remember when we went to Chongqing?

   —I can’t remember now but ______ sometime last summer?

A. could it be   B. might it be    C. could it have been  D. might it have been

— Do you still remember when we went to Chongqing?

   —I can’t remember now but ______ sometime last summer?

A. could it be   B. might it be    C. could it have been  D. might it have been