写出下列短语的完整形式或缩略形式.1.what's____ 2.it is_____ 3.who's___ 4.he is___

问题描述:

写出下列短语的完整形式或缩略形式.1.what's____ 2.it is_____ 3.who's___ 4.he is___

1.what is
2.it's
3.who is
4.he's