Obligation

In my school, the students ... wear black shoes and white shocks.

• have to

• has to

• must not

• should

• doesn't have to

Raya: Have you heard that Chaca is sick?

Chaca: Not yet. I think we ... him.

Raya: That's a good idea, but I can't visit him today.

• must

• must not

• have to

• shouldn't

• should

It's not obligatory to wear a tie. So, you ... wear one.

• don't have to

• doesn't have to

• have to

• must

• mustn't

You ... do your homework on Saturday morning. That way, you'll have the rest of the weekend free.

• don't have to

• should

• shouldn't

• mustn't

• doesn't have to

Huft, tomorrow is Monday. I ... wake up early in order that I don't come late.

• mustn't

• has to

• must

• should

• have to

Covid-19 is not over. So, ...

• You have to wear a mask

• You have to clean your face

• You must shut up your mouth

• You must smile on your mask

• You must not wear a mask

I have an exam tomorrow. So, I ... prepare it in order that I can get good mark.

• must not

• must

• have to

• has to

• don't have to

My dad ... go back to work because there was an emergency.

• have to

• must

• has to

• should

• doesn't have to

Look at that sign! We ... here.

• don't have to park

• have to park

• must park

• must not park

• should park

I can hear you. You ... shout.

• mustn't

• must

• don't have to

• have to

• should