把下面句子变成一般疑问句（英语的 ）
问题描述：
把下面句子变成一般疑问句（英语的 ）
1.Our teacher is over there.
2.They're at home.
3.We're inRow One.
4.I'm an American.
将下列句子变成复数句
1.This is a book.
2.That isn't an eff.
3.Is this a book?Yes,it is.
4.Your picture is very good.
答
Is our teacher over there?Are they at home?Are we in Row One?Am I an American?These are books.Those aren't effsAre these books?Yes,they are.Your pictures are very good.