Question

The most important thing _____we should pay attention to is the first thing____I have said.

A.which ,that
B.that, which
C.which ,which
D.that ,that
2.She spent the whole evening talking about the things and persons_____none of us has ever heard of.
A.which B who C.whom D.that

3.__was expected ,he failed in the exam.
A.That B.As C.Which D.It

4.The children climbed up the hill,_____they picnicked.
A.on its top B.on the top of it C.on whose top D.on the top of that

Answer 1

第一题A 中心词用first修饰的时候 只能用that
第二题A 中心词是the things and persons 是物和人的结合体 只能用that
第三题A That 指的是后面将要提到的事 ，
（1）That was expected ,he failed in the exam.
（2）As expected ,he failed in the exam.
（3）He failed in the exam，which was expected.
(4)He failed in the exam,中间有讲述为什么他考试没过是被别人希望的，it was expected.
第四题 A picnicked是climbed up 的连续性动词，动作是连续的 主语讲的都是
The children 所以不是主语也不是定语从句 不能选C和D

Answer 2

A that在同位语从句和定于从句的用法区别．

A 谈的是事情和人物

A 独立主格结构

A 主语

Answer 3

应该选D 前面一个句子为定语从句 we shouldPayAttention To 是对前面的thing进行解释说明的 又因为它前面用得是the first所以用that 而后一句则是宾语从句 而因为前面用的是最高级所以也用that

Answer 4

第一题选C第三题D