把下面的句子改为一般疑问句 并作肯定或否定回答 I an in Class FIve,GRade Seven They are in Class ELeHe is twelve years old
问题描述：
把下面的句子改为一般疑问句 并作肯定或否定回答 I an in Class FIve,GRade Seven They are in Class ELe
He is twelve years old
答
are you in class five,grade seven?
yes,i am.no,i am not.
are they in class eleven?
yes,they are.no,they aren't.
is he twelve years old?
yes,he is.no,he isn't.