变为复数形式It's a knifeHe is an English teacher I'm a student 就换线部分提问Thses are (Aaerican cars 划线)The apples are (on the three 划线）That boy is (Paul划线）

变为复数形式It's a knifeHe is an English teacher I'm a student 就换线部分提问Thses are (Aaerican cars 划线)The apples are (on the three 划线）That boy is (Paul划线） It,s a knife 变为复数形式 It's a knife 变为复数形式 What is this It is a photo.变为复数形式 It's a tomato的复数形式 what's this?it's a cat变为复数句 英语复数It's a potato改为复数形式 it's green复数形式 it's的复数形式 It's a calculator改为复数形式It's a pen.It's my key.That's a clock.It's her book都改成复数形式 It,s a new toy bus.改为复数形式. it's a naw book改为复数形式 It's a large room.(改为复数形式） it's a new book 改为否定的复数形式 it's a purple flower(改为复数形式） It's a dictionary on the bookcase.改为复数形式 dictionary变为复数形式 It is a watch.变为复数句