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4. I (not see) you for a long time. You (change) a lot.

3. The accident (happen) on a cold winter night last year.

三、動詞填空

1. The Great Wall (know) all over the world.

2. I can't understand the story. It (write) in French.

8. We invite local doctors and nurses on board to learn about eye operations.

7. The government builds many schools in poor areas every year.

6. Edison invented the electric light.

5. The teacher gave us some useful advice yesterday.

4. Dr Ma operated on 150 patients during his last visit.

3. They use the as a training center.

二、用被動語態(tài)改寫句子

1. We plant trees every year.

2. We can cure 80 per cent of these diseases.