III. Choose the best answer to complete the sentences.
1. You look really tired. You _________ take a few days off and have a holiday.
a.should b. must c. have to d. can
2. In Vietnam, you _________ take a deep bow as you do in Japan.
a. mustn’t b. don’t have to c.should d. shouldn’t
3. Sorry, but my train is at 6.00. I _________ leave now.
a. shouldn’t b.ought to c.mustn’t d. have to
4. You _________ look at other students’ work. It’s against the rules.
a. shouldn’t b.don’t have to c. mustn’t d. can’t
5. The airline only allows two piecesof luggage. You _________ pack too much!
a. shouldn’t b. mustn’t c. don’t have to d. couldn’t
III. Choose the best answer to complete the sentences.
1. You look really tired. You _________ take a few days off and have a holiday.
a.should b. must c. have to d. can
2. In Vietnam, you _________ take a deep bow as you do in Japan.
a. mustn’t b. don’t have to c.should d. shouldn’t
3. Sorry, but my train is at 6.00. I _________ leave now.
a. shouldn’t b.ought to c.mustn’t d. have to
4. You _________ look at other students’ work. It’s against the rules.
a. shouldn’t b.don’t have to c. mustn’t d. can’t
5. The airline only allows two piecesof luggage. You _________ pack too much!
a. shouldn’t b. mustn’t c. don’t have to d. couldn’t