8. You ... boil the water before drinking it. It is not pure here. 1. must
2. should
3. needn't
4. don't have to
5. ought to
9. You ... stop smoking. It affects your health badly.
1. must
2. should
3. ought
4. needn't
5. has to

диана2470    2   05.11.2020 20:21    2