[单选题]His beloved son died in a car accident two years ago, () cast a shadow over the rest of his life.

A

that 

B

it

C

which 

D

what

正确答案:C
题目解析

本题考查从属连接词which。逗号前是完整句子,空处应该指代的是这一句话,引导非限制性定语从句,所以要选择which。

句意:他深爱的儿子两年前死于一场车祸,这给他的余生蒙上了阴影。

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