1. Choose the correct option.

(Chọn phương án đúng.)

1 The doctor says I ________ take this medicine three times a day.

A must

B mustn't

C don't have to

D have to

2 I want to get fit, so I ________ do more exercise.

A have to

B can

C must

D mustn't

3 You ________ use your mobile phone in this room. It's against the rule.

A mustn't

B don't

C don't have to

D won't

4 It's a small operation, so he ________ stay in the hospital overnight.

A mustn't

B doesn't have to

C not have to

D doesn't

5 Hospital visitors ________ park their car in the ambulance parking. It's prohibited.

A not have to

B don't have to

C don't

D mustn't

2. Complete the sentences to express a same meaning to the given ones. Use the correct forms of must or have to.

(Hoàn thành các câu để diễn đạt ý nghĩa tương tự với những câu đã cho. Sử dụng dạng đúng của must hoặc have to.)

1 It isn't necessary for you to do exercise every day.

You _______________________________

2 It's against the rules to enter that room.

You _______________________________

3 I believe it's necessary for me to lose weight.

I _______________________________

4 Claire is obliged to wear gloves and a mask at work.

Claire _______________________________

5 It's important that Ryan sees a dentist today for his toothache.

Ryan _______________________________

6 You are not allowed to smoke in the hospital.

You _______________________________

should/ought to – had better

3. Choose the option (A, B, C or D) to indicate the underlined part that needs correction in each of the following sentences. Then correct the mistake.

(Chọn phương án (A, B, C hoặc D) để chỉ ra phần gạch chân cần sửa trong mỗi câu sau. Sau đó sửa lỗi sai.)

1 You had better not to drink iced water if you don't want your sore throat to get worse.

            A                  B                                           C                                  D

2 You ought stay home if you aren't feeling well.

           A       B                        C                  D

3 You should to change your diet if you want to be healthier.

             A         B                                   C        D

4 Jill had better not to forget to take her medicine or she won't get better.

             A                  B          C                                            D

5 You ought to putting some lavender in your tea to help you relax.

             A           B                                                C              D

4. Rewrite the sentences to express the same meaning to the given ones. Use the words in brackets in the correct forms.

(Viết lại câu để diễn đạt nghĩa tương tự với những câu đã cho. Sử dụng các từ trong ngoặc ở dạng đúng.)

1 It's important that he stays off that sprained ankle or he will injure it again. (HAD BETTER)

__________________________________________________________

2 It's not a good idea for teens to go to bed late. (SHOULD)

__________________________________________________________

3 Don't forget to wear suncream on the beach or you'll get a sunburn. (HAD BETTER)

__________________________________________________________

4 Why doesn't Jill go for a run if she's stressed? (SHOULD)

__________________________________________________________

5 If I were Jill, I would follow an exercise programme to lose weight. (OUGHT TO)

__________________________________________________________