822. modal verb

You ___ talk during the exam. It’s against the rules.

• don't have to

• mustn't

• can't

• shouldn't

You ___ go to the meeting if you have other plans. It’s optional.

• can't

• shouldn't

• don't have to

• mustn't

Complete the sentence:
Dear! You look awfully tired. You _____ get some sleep.

• must
• should
• have to
• don't

_____________ you sent me the file, please?

• Should

• Could

• Must

• Might

We don’t know where Kellie is. She __________ be in the garden.

• can

• must

• might

• should

You ___________ use the phone in the class!

• mustn't

• shouldn't

• may not

• don't have to

You _________ sit so near the TV.

• may not

• don't have to

• should not

• could not

You _________ put on sunscreen when sunbathing.

• may

• should

• can

• could

A: I have to lose weight.

B: You ______________join a gym.

• may

• were able to

• have to

• should

Joan ___________ come home late tonight.

• must

• should

• might

• was able to