• The biker should go to bed directly.

• The biker should fill the cavity.

• We should not worry about it.

• We must stay away from that area.

• You don’t have to sleep.

• You should go to bed.

• You must not only bring one dog.

• You must not bring a dog.

• We should not talk but sing is allowed.

• We should be quiet.

Joni is hungry in the afternoon.

• He should find food.

• He should go to bed.

I feel tired after work out.

• I should take a rest.

• I should not work out.

I got a headache.

• I have to get to the doctor.

• I must think harder.

I got a headache.

• I have to get to the doctor.

• I must think harder.

I’m weak at math.

• I should give up.

• I should not give up.