4道关于倒装句的英语题.谢谢了1.Not until then _____his mother had done it

4道关于倒装句的英语题.谢谢了
1.Not until then _____his mother had done it for his good.
A.he knew B.does he know C.did he know D.he knows
2.There ________.Let's begin our class.
A.goes the bell B.the bell goes C.is going the bell D.the bell is going
3.Here ______.
A.comes he B.he comes C.he was come D.does he come
4.Aren't you looking for your bag?_____.
A.Here is it B.Here are they C.Here they are D.Here it is