单选题：I can never forget the day _______ we worked together and th..

题目内容：

I can never forget the day _______ we worked together and the day ______ we spent together.A．when; whichB．which; whenC．what; thatD．on which; when

参考答案：

______ he referred to in his article was unknown to the gene..

______ he referred to in his article was unknown to the general reader. A．ThatB．WhatC．WhetherD．Where

分类：状语从句题型：单选题

The letter is from my sister, ______is working in Beijing. A．which B．that C．whom D．who

分类：状语从句题型：单选题

___is certain is ___prevention is more important than treatment .A．It;that B．What;that C．As;whatD．What;what

分类：状语从句题型：单选题

I have two grammars, ______are of great use. A．all of whichB．either of whichC．both of thatD．both of which

分类：状语从句题型：单选题

Is it true _____ the rain stops, it will be as hot as in the summer here?A．whenB．that whenC．wheneverD．that

分类：状语从句题型：单选题