The pen I paid 2 dollars was lost.A. to whichB. for whichC. whichD. that

问题补充：

The pen, I paid 2 dollars, was lost.

A. to which

B. for which

C. which

D. that

答案：

A. to which

(答案→)B. for which

C. which

D. that

解析：考查定语从句。先行词为the pen，当指物的引导词做介词宾语时，只能使用which，pay for为……付款，故选B。