练习
用 of 或 for 填空。
1. It's kind you to help me a lot.
2. It's easy her to make a cake.
3. It's important us to learn English well.

Passage 3 The things you need to know about a cold
阅读短文，完成下面的思维导图。（每空一词）
A cold often starts with a sore throat. And you usually have a headache too. It's not serious, but you can feel very bad.
What should you do when you have a cold? You should have a good rest first. It's good to drink a lot of water too. You can see a doctor and take some medicine. Maybe you can also try some Chinese medicine that is now very popular around the world.
What should you do to keep away from catching a cold? One important way is to exercise more often. Running, swimming or even walking can help a lot. Try to exercise for at least 30 minutes a day. It's also important to go to bed and get up early. Studies show that the cold virus can live on our hands for a long time. So you should wash your hands before eating and drinking. Finally, it's important to have a balanced diet.
If you can do these, you won't catch a cold easily.