You __________ be quiet. You can't talk in here.
1. must
2. mustn't
3. don't have to
It isn't going to rain, so we __________ take an umbrella.
1. don't have to
2. mustn't
3. must
You __________ drink and drive. It's illegal, and very dangerous.
1. mustn't
2. must
3. have to
You __________ wear a blue shirt. You can wear any colour you like.
1. don't have to
2. must
3. mustn't
At weekends, I __________ go to bed so early.
1. don't have to
2. mustn't
3. have to
We __________ forget to buy some cat food.
1. mustn't
2. don't have to
3. have to
Now remember, you __________ talk during the exam.
1. mustn't
2. don't have to
3. must
He __________ work. He's very rich.
1. doesn't have to
2. mustn't
3. has to
Please sir, you __________ wear your seat belt during take off.
1. must
2. mustn't
3. don't have to
You __________ listen. This information is very important.
1. must
2. mustn't
3. don't have to