—We’ll take the conditions into careful consideration you have attached to this contract.

问题补充：

—We’ll take the conditions into careful consideration you have attached to this contract.

—Thanks. Hope for further cooperation.

A. as

B. which

C. where

D. what

答案：

A. as

(答案→)B. which

C. where

D. what

解析：通过分析句子结构，可知这个句子中包含一个分隔式定语从句，且关系词在从句中作宾语，指物，故用which。