Answer:
Exercise 1
1. she might be ill.
2. might be in the meeting.
3. you might not like it.
4. I might not be in time.
5. we might win.
6. It might be cold.
Exercise 2
1. you should wear a jacket.
2. I should study tonight.
3. You shouldn't drive in the part of the city.
4. she should relex
5. people should walk fast when it is raining.
6. you should go to bed early tonight.
Exercise 3
1. Jane have to work hard.
2. you have to wear a uniform.
3. My sister have to go to school.
4. I have to finish this now.
5. we have to get up early tomorrow.
6. Harry have to work tomorrow.
7. we have to hurry or we will be late.