Section Ⅱ Using language

基础训练

单句语法填空 在空白处填入1个适当的单词或括号内单词的正确形式。

1. How can we account for the population   （explode） in cities？

2. What’s more， we can come up   our own ideas and learn more through discussion.

3. So far， the number of students who choose this subject   （decrease） by 30%.

4. To our surprise， the poor man became a successful businessman   （subsequent）.

5. The cats quickly developed an appetite   the birds.

6. Before you   （departure）， let me give you a word of advice.

7. Water can   （dissolve） into hydrogen and oxygen.

8. The price was   （substantial） higher than had been expected.

完成句子 用it作形式宾语补全句子。（剩余4400字）