CHUYÊN ĐỀ 9: ĐỘNG TỪ KHUYẾT THIẾU

B. PRACTICE EXERCISES

Exercise 1.1: Choose the best word or phrase to fill in the blank.

Question 1: All students______wear uniforms at school because it is a rule.

A. should B. have to C. ought to D. must

Question 2: You______finish your homework before you go to bed.

A. must B. have to C. should D. ought to

Question 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

Question 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

Question 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

Question 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

Question 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

Question 8: Those audiences______show their tickets before entering the concert hall.

A. have to B. must C. ought to D. don't have to

Question 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

Question 10: In case you're suffered from the injury, you______see the doctor today.

A. had better B. must C. ought D. have better

Question 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. can't D. don't have to

Question 12: You look totally exhausted. You______take a rest instead of working

overtime.

A. should B. ought C. must D. has better

Question 13: Anyone______have a passport, even a visa when travelling all around the

world.

A. ought to B. must C. should D. has to

Question 14: In the peak season, travellers______book their accommodation in advance.

A. have to B. must C. should D. ought

Question 15: My car broke down yesterday, so I______catch a taxi to the office.

A. have to B. had better C. had to D. has to

Question 16: We______eat as much fruit as possible in order to get enough vitamins for

our bodies.

A. had better B. should C. ought to D. All are correct

Question 17: You______tell anyone what I've revealed to you. It's still a secret.

A. mustn't B. had better not C. ought not to D. don't have to

Question 18: If you still want to maintain this relationship, you______behave improperly

like that.

A. ought to not B. ought not to C. mustn't D. don't have to

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