.The last time we had great fun together was we were flying kites in Xinghai Square which

问题补充：

.

The last time we had great fun together was we were flying kites in Xinghai Square, which will be remembered forever.

A. when

B. in which

C. what

D. which

答案：

(答案→)A. when

B. in which

C. what

D. which

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