A:I have had a terrible headache since yesterday. B: Don't take an aspirine, you really _______ (should/have to/can) go to the doctor. (advice

You ____________ (should/must/have to) wear a rope when you are working in the library. (instruction)

Students in private schools _________ (musn't/should/have to) wear uniform.

We __________ (must/has to/have to) clean our room every day. (external obligation)

I __________ (shouldn't/haven't to/don't have to) wear glasses, I still can see perfectly well.

I think I ___________ (must/shouldn't/has to) tell her the truth. (internal obligation)

We ___________ (must/don't have to/should) go for a coffee one day. (suggestion)

According to the teacher, we _____________ (have to/has to/should) go to the meeting. (external obligation)

You __________ (must/musn't/should) use the swimming pool before 10 am (instruction).

You ________ (shouldn't/can't/didn't have to) take the money. It wasn't necessary.

If you want to be healthy, you _________ (should/haven't to/musn't) do exercise on a regular basis. (advice)

The advice from the health comittee is that people with covid symptoms __________ (should/must/haven't to) go to the doctor. (instruction)

If you want to pass the exam, you __________ (have to/should/must) study harder. (advice)