3. 如果我没有感冒，我会去工作，而不是躺在床上。

If I hadn't got a cold? I'd be working in bed.

2. 我们可以利用网络学习。

^{We can} the Internet to learn.

III. 根据汉语意思完成句子

1. 如果我们都参加这项活动，我们的行动就能带来 变化，创造更加美好的未来。

If we all take part in the activity,our actions can

  and a better future.

5. Remember (throw) rubbish in the bins and keep public places clean and beautiful.

4. We can take the bus instead of (drive) the car.

3. The air is (bad) polluted because there are too many cars now.

2. The lake is dirty. It used (be) very clean.

II.用括号中所给词的适当形式填空

1. This method esn m?kc a (different) in our life.

6. 丁his can turn beautiful places into u ones.

5. There is a big w table in the middle of the room.