There is none here,they must have gone to school意疑问句是什么
问题描述：
There is none here,they must have gone to school意疑问句是什么
答
这里没人，他们一定是去学校了。
is there anyone here?
no they must have been to school
答
There is none here, could they have gone to school?
怀疑none应该是no one。
答
Is there no one here?Have they gone to school?
答
There is none here,they must have gone to school，haven't they？