.Can you still remember the dayswe spent together in Chongqing last summer?A. in whichB. w

问题补充：

.Can you still remember the dayswe spent together in Chongqing last summer?

A. in which

B. when

C. that

D. on which

答案：

A. in which

B. when

(答案→)C. that

D. on which

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