题目内容：

改错。每小题有一处错，请将它划出，并改正在后面的横线上。)

1.Who's the boy wears a green sweater?

2.These shoes are very nice. Could I try it on?

3.─Who are you go shopping with?─My mother.

4.There are some paper and three books on the desk.

5.Let off fireworks is my favourite thing at the Spring Festival.