一道英语题；选C Don't do such things ____you are not sure sbout A.t

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一道英语题；选C Don't do such things ____you are not sure sbout A.that B.which C.as D./
为什么选c不能其它项,

such as 的固定句式,是下面的第三种用法,意为凡是你不确定的事不要去做!
A B D语法没有错误,但是C更符合句意~
such as有以下用法：
一、例如
二、像……这样的
三、表示凡是……的人（或事物）
四、表示关系代词
五、such…… as to do sth 表结果
六、such as it is 表示让步,意为尽管不怎么好,但还可以……

一道英语题；选C Don't do such things ____you are not sure sbout A.t Don't talk about such things ( ) you are not sure of.A.that Don't do such tings.You are not sure about the things.把它合并成定 that ,区别Don't talk about such things ,（）you are not sure of. Don,t talk about such things you are not sure of? 1.Don’t talk about such things of _______ you are not sure. Don't talk about such things___you are not sure of You feel sleepy,____you?A are B aren't C don't D do Don't talk about such things that you do not understand 1. Don’t talk about such things of __________ you are not su 1.Don’t talk about such things of __________ you are not sur 1.Don't talk about such things ___you are not of.