1.Don’t talk about such things of _______ you are not sure.A.which B.what C.as D.those请问这个题目为什么选a呢?麻烦把语法知识点也详细讲一下哈.

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1.Don’t talk about such things of _______ you are not sure.A.which B.what C.as D.those请问这个题目为什么选a呢?麻烦把语法知识点也详细讲一下哈.

1.Don’t talk about such things of _______ you are not sure.A.which B.what C.as D.those请问这个题目为什么选a呢?麻烦把语法知识点也详细讲一下哈.
1.Don’t talk about such things of _______ you are not sure.
A.which B.what C.as D.those
请问这个题目为什么选a呢?麻烦把语法知识点也详细讲一下哈.

1.Don’t talk about such things of _______ you are not sure.A.which B.what C.as D.those请问这个题目为什么选a呢?麻烦把语法知识点也详细讲一下哈.
of which 是固定搭配
意思相当于 that
Don’t talk about such things of which you are not sure.
就相当于
Don’t talk about such things that you are not sure.

of which you are not sure = sth. you are not sure.
然后sth. 就是 such thing 了。
分成2分句的话 在things of中间
分成2句来理解

选A。of which引导定语从句,介词of是与定语从句中的形容词sure搭配的。