1 Those are keys.
2 She is an English girl.
3 What color are your jackets
4 They are my friends .
5 They 're black pens.
单复数句互换1、That is a key.2、They＇re English girls.3、What color is your jacket?
4、He is my friend.5、It＇s a black pen.
1 Those are keys.
2 She is an English girl.
3 What color are your jackets
4 They are my friends .
5 They 're black pens.