题目内容：

用所给单词的适当形式填空

1.She buys three __(pair)of shoes.

2.These vegetables are good for us.I’ll take__(they).

3.Look at the __(boy).They’re in the classroom.

4.The shoes are at a great__(sell).Let’s go and see them.

5.Mary__(need)a schoolbag.Her schoolbag is lost.