Grammar- modal verbs

You ..... help your parents at home.

• should be

• should

• must be

• musn't be

You ...... wear a seatbelt when you drive for your safety.

We ........... reusable bags when shopping.

• shoud be use

• should use

• should used

• should use to

I should spend my money wisely. I ...... waste it.

• should be

• mustn't be

• shouldn't

• should have been

Must we call early?

Yes, ...........

You should eat healthy food. It's good for you.

Which picture best describes the sentences above?

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• 
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We use " must" to ......

• talk about obligation

• talk about prohibition

• give advice

We use "should" to give......

We use " mustn't" to talk about ....

• prohibition

• obligation

• advice

Do you think we should phone her?

• Yes, we shouldn't.

• No, we should.

• Yes, we should.