1. All students ____ wear uniforms at school because it is a rule.
A. should B. have to C. ought to D. Must
2. You ____ finish your homework before you go to bed.
A. must B. have to C. should D. ought to
3. This drink isn't beneficial for health. You ____ drink it too much.
A. should B. ought to not C. ought not to D. mustn't
4. This warning sign indicates that you ____ step on the grass.
A. shouldn't B. mustn't C. don't have to D. ought not to
5. I think you ____ do exercise regularly in order to keep your body in
good shape.
A. must B. should C. ought to D. Both B and C
6. I will lend you some money, but you ____ pay it back to me next week.
A. should B. have to C. must D. mustn't
7. Hoa ____ feed the cats because her mother has done it already.
A. has to B. doesn't have to C. must D. Both A and C
8. Those audiences ____ show their tickets before entering the concert
hall.
A. have to B. must C. ought to D. don't have to
9. The children ____ spend too much time playing computer games.
A. mustn't B. ought to not C . shouldn't D. Both B and C
10. In case you're suffered from the injury, you ____ see the doctor today.
A. had better B. must C. ought D. have better
11. Water park is free for kids under 6 years old, so you ____ pay money
for your son.
A. have to B. mustn't C. should D. don't have to
12. You look totally exhausted. You ____ take a rest instead of working
overtime.
A. should B. ought C. must D. has better
13. Anyone ____ have a passport, even a visa when travelling all around
the world.
A. ought to B. must C. should D. has to