Don’t quarrel with your friend will damage your friendship．A. whoB. whichC. thatD. what

问题补充：

Don’t quarrel with your friend, will damage your friendship．

A. who

B. which

C. that

D. what

答案：

A. who

(答案→)B. which

C. that

D. what

解析：可联系答.案.网客服索取。