We __________ be careful when we cross the road.

• mustn't

• don't have to

• must

We ___________ clean and decorate your house before Tet.

• should

• shouldn't

• mustn't

You __________ touch that switch. It’s dangerous.

• have to

• don't have to

• mustn't

You __________ be quiet in the school library.

• mustn't

• has to

• must

Jane ___________ finish his homework before the class tomorrow.

• have to

• has to

• had to

It’s raining heavily outside. You ___________ go out side.

• shouldn't

• have to

• must

Molly usually comes to class late. She should ___________ early.

• get up

• gets up

• got up

If we have to stay inside for a long time, we ___________ join online classes at home.

• mustn't

• should

• don't have to

Minh’s room is very dirty. He should ___________ his room every day.

• to clean

• cleaning

• clean

A person ____________ become rich and famous.

• doesn't ought to

• ought to

• ought not to