and: nối 2 mệnh đề cùng loại, thể hiện quan hệ liệt kê hoặc bổ sung.

but: nối 2 mệnh đề trái ngược nhau.

or: nối 2 mệnh đề thể hiện sự lựa chọn.

so: nối 2 mệnh đề, trong đó MĐ thứ hai là kết quả của MĐ thứ nhất.

`=>`

1. I eat more fruit and vegetables, and I want to be fitter and healthier.

2. You have sunburn but you don't wear a sun hat.

3. You may have an allergy, so be careful with what you eat and drink.

4. Tom has a temperature and Tom has a sore throat.

5. You are catching flu but you don't wash your hands very often.

Đáp án:

1. I eat more fruit and vegetables, and I want to be fitter and healthier.

2. You have sunburn but you don't wear a sun hat.

3. You may have an allergy, so be careful with what you eat and drink.

4. Tom has a temperature and Tom has a sore throat.

5. You are catching flu but you don't wash your hands very often.