My neigh bours used to give me a hand in time of trouble was very kind of them. A. who B

问题补充：

My neigh bours used to give me a hand in time of trouble, was very kind of them.

A. who

B. which

C. that

D. it

答案：

A. who

(答案→)B. which

C. that

D. it

解析：非限制性定语从句常用which引导,which表示前句话的整个含义.