Review:

用所给单词的适当形式填空。

A

1. The government had better ______ (take) action _________(prevent) air pollution.

2. Binoculars can help you see ________(clear).

3. It takes hours __________ (watch) the birds.

B

1. Many ________(visit) come to Yancheng Nature Reserve to go birdwatching every year.

2. There are ________(speak) in each corner of the hall.

3. Yi Jianlian is my favourite basketball ________(play).

4. Einstein was one of the greatest ________(science) in history