—Haven't I seen you some place before?—Yes. That's I don't go there anymore.A. becauseB.

问题补充：

—Haven I seen you some place before?

—Yes. Thats I don go there anymore.

A. because

B. how

C. why

D. when

答案：

A. because

B. how

(答案→)C. why

D. when

解析：C 考察表语从句。因为你在某个地方见过我，所以我再也不到那个地方去了。故C正确。