改为复数形式 1.is there a bok on the desk?2.this is a nice dress.
问题描述：
改为复数形式 1.is there a bok on the desk?2.this is a nice dress.
3.she is a little girl.
4.this is his picture.
答
1.Are there books on the desk?
2.These are nice dresses.
3.They are little girls.
4.These are their pictures.