11._____caused the accident has not yet been found.A、WhichB、WhicheverC、WhatD、

游客2023-10-26  22

问题 11._____caused the accident has not yet been found.

选项 A、Which
B、Whichever
C、What
D、Whatever

答案 D

解析 名词性分句。首先,谓语动词之前多为主语从句;其次,此主语从句中所缺的成分是主语,名词性质,故排除限定词性质的A和B。what和whatever区别在于前者确定特指,后者非确定特指,比较:What caused the accident was a broken bottle.
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