1.Tom and Mike don't have a room.
Do Tom and Mike have a room ?Yes,they do./No,they don't.
2.I don't have an apple.
Do you have an apple?Yes,I do./No,Idon't.
3.You don't have any eggs.
Do you have any eggs? Yes,I do./No,I don't.
4.We don't have any dosks.
Do you have any dosks? Yes,I do./No,I don't.
5.They don't have any books.
Do they have any books? Yes,they do./No,they don't.
我觉得你的选项都写错了。正确答案应该是She has changed it since yesterday (她从昨天起换号了）
"since"这个词提示你要用完成时，所以要是have或者has，因为这里主语是she,所以必须用has。
知道为什么是has changed了吧
你选项里的A.is changing 指的是将来要改号码，看到"yesterday"肯定不对
B.和C.语法上根本就是错的，havehas加动词ing在这里没有意义。
还有什么不懂的就hi我，乐意解答：）
