Must - Have To - Should - Can

You .......... feed the animals in the zoo. It’s forbidden!

• should

• have to

• mustn’t

• must

You .......... do exercise every day. It’s good for your health.

• have to

• should

• must

• don’t have to

He .......... study harder, if he wants to pass the test.

• has to

• should

• have to

• can

You .......... eat fast food too much. It’s bad for your health.

• must

• can

• have to

• shouldn’t

She .......... wear uniform to school everyday.

• have to

• must

• should

• may

You .......... use mobile phone during the lesson in the classroom.

• shouldn't

• don't have to

• mustn’t

• can't

They ....... finish their homework before the dinner, because the deadline is at 7 PM

• should

• has to

• must

• have to

She ........... wear the jacket tonight. It’s very cold.

• have to

• should

• must

• may

This is a big secret. You ........... tell anyone about it.

• shouldn't

• mustn’t

• don't have to

• may not

You ........... speak politely and decent to your parents.

• must

• mustn’t

• should

• have to