问题描述：
将以下句子改为复数形式,谢谢 1.this is my case. 2.my dress is green. 3.that's my suit.
4.Is this your passport? 5.Is your friend Russian? 6.here it is.
4.Is this your passport? 5.Is your friend Russian? 6.here it is.
问题解答：
我来补答展开全文阅读