Choose the correct answers A, B, C, or D to complete the following sentences.
1. If you want to maintain a healthy weight, you _________ have snacks between meals.
A. shouldn't B. should C. must D. don't have to
2. I __________ strictly follow the doctor’s instructions if I want to get better quickly.
A. shouldn't B. must C. can D. don't have to
3. The government ___________ improve the infrastructure of big cities to boost the economy.
A. mustn't B. doesn't have to C. should D. didn't have to
4. People living in high-rise buildings ___________ obey the safety rules and regulations strictly.
A. shouldn't B. mustn't C. may D. have to
5. Lots of women in the past ___________ stay at home, look after their children, and do all housework.
A. must B. should C. had to D. have to
6. My parents respect my career choice, so I __________ follow in their footsteps.
A. mustn’t B. don‘t have to C. should D. shouldn't
