I have learned from my bitter experience______we don't know _____we've got until it's gone A that;thatB what;whatC that; whatD which;that为什么呢?

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/17 07:46:11

I have learned from my bitter experience______we don't know _____we've got until it's gone A that;thatB what;whatC that; whatD which;that为什么呢?
I have learned from my bitter experience______we don't know _____we've got until it's gone
A that;that
B what;what
C that; what
D which;that
为什么呢?

I have learned from my bitter experience______we don't know _____we've got until it's gone A that;thatB what;whatC that; whatD which;that为什么呢?
前一空that引导的是宾语从句,that 没有实在意义;后一空what 引导的也是宾语从句,what 连接从句,同时又是从句中have got 的宾语