It's years we met each other at a party in Qingdao .A. whenB. thatC. beforeD. since

问题补充：

Its years we met each other at a party in Qingdao .

A. when

B. that

C. before

D. since

答案：

A. when

B. that

C. before

(答案→)D. since

解析：考查固定句型：句意：自从我们在青岛的聚会上见面已经有很多年了。使用了句型：It is +一段时间+since 从句“自从…有多久了”，选D。