题目内容：

 

1.如果你不知道一个单词，你可以在网上查找。

If you don’t know a word, you can ____  it ________ on the Internet.

2.英国以一所大学而著名。

England is ____  ____   a university.

3.为了能上一所好大学，他努力学习。

He studies hard  ____  ____    he can go to a good university.

4.在跑步之前你最好热身。

You had better  ____   _____  before you run.

5.刚才观众为他们最喜欢的歌手喝彩加油。

The crowd ____  their favourite singers ____ just now.