. ---- we will take the conditions into careful consideration you have attached to this c

问题补充：

. ---- we will take the conditions into careful consideration you have attached to this contract.

---- Thanks. Wish our future cooperation pleasant.

A. after

B. when

C. what

D. which

答案：

A. after

B. when

C. what

(答案→)D. which

解析：考查定语从句。the conditions是先行词，attach sth. To...“强调......的重要性”。Attached缺少宾语，故用which引导定语从句。故选D。