You _________ study hard to get high marks.

• should

• should to

• have

• can

You _________ buy a new mobile. Yours is still working.

• have to

• don't have

• don't need to

• must

You ________ walk on the grass. It isn't allowed.

• can

• must

• mustn't

• don't have to

You ________ more exercise to get fit.

• should to do

• shouldn't do

• should do

• should doing

I ________ see you, it's too dark

• can't

• can

• don't have to

• mustn't

I ________ to do my homework now.

• have

• mustn't

• can't

• must

There's a sign that prohibits diving in the pool, so you ________ do it!

• mustn't

• have to

• must

• shouldn't

You _________ believe everything you read in the newspapers. There's a lot of false information there.

• should

• shouldn't

• must

• can't

She ________ play the piano. She is a musician.

• cannot

• can

• mustn't

• should

You ________ swim here. It's forbidden.

• must

• mustn't

• don't have to

• have to