is this a red pen 改为复数句,并作肯定回答is that an english book?改为复数句,并作否定回答
问题描述:
is this a red pen 改为复数句,并作肯定回答
is that an english book?改为复数句,并作否定回答
答
is this a red pen 改为复数句,并作肯定回答
is that an english book?改为复数句,并作否定回答