Boys _______ observe the proper haircut when they are in school.

• has to

• have to

• can

• may

You _____ take ginger tea for your sore throat.

• can

• may

• should

• must

Grandma ________ to take her medicine in the right time so that she will not get sick.

• has to

• have got to

• needs to

• is allowed to

Mother to her child: You _____ get inside now! The monster will get you if you will still stay there.

• must

• should

• can

• may

Ivy ________ see a doctor because she has skin rashes for almost a week!

• must

• should

• can

• may

Look at the sign! You __________ walk into that lane.

• must not

• should not

• cannot

• may not

People _________ enter the supermarket without a quarantine pass.

• must not

• should not

• cannot

• may not

You _______ leave the room unless you are done with your exam.

• must not

• should not

• cannot

• may not

She __________ use the computer because it is not working.

• must not

• should not

• cannot

• may not

Children _____________ spend more than one hour in using mobile phones.

• must not

• should not

• cannot

• may not