_____has happened many times, children may get drowned in this river. A.AsB.WhichC.WhatD.That -英语

题目简介

_____has happened many times, children may get drowned in this river. A.AsB.WhichC.WhatD.That -英语

题目详情

_____has happened many times, children may get drowned in this river. 
A.AsB.WhichC.WhatD.That 
题型:单选题难度:偏易来源:不详

答案

A
关系代词as 代替整个主句,放在句首用as, 不用 which。

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