Must Have to Should Ought to

You should read a receipt carefully before you sign it.

• obligation with additional shades of advisability

• supposition

• emotional should

• something that is destined to happen

You oughtn’t to have interfered into her affairs.

• obligation with additional shades of advisability

• supposition

• emotional should

• something that is destined to happen

State the meaning of the perfect infinitive: You oughtn’t to have laughed at his mistakes.

• the speaker wants to say that a desirable action wasn't carried out

• the speaker wants to say that a desirable action was carried out

• the speaker wants to say that an undesirable action was carried out

State the meaning: Tom has been eating too much recently. He should eat less.

• obligation with additional shades of advisability

• supposition

• emotional should

• something that is destined to happen

I think you _________ stay up late because it is not good for your health.

• should

• ought not to

• don’t have to

• mustn’t

I _________ finish homework before going to class. My teacher is rather strict.

• 
  don’t have to

• have to

• should

• must

We ________ show respect to our parents.

• ought to

• must

• have to

• should

She is an expert adviser; thus, I think you _________ to ask her for some advice.

• must

• ought

• should

• have

You __________ eat plenty of fruit or vegetables every day because they are good for your health.

• don't have to

• oughtn't to

• mustn't

• should

In the peak season, travelers ____ book their accommodation in advance.

• have to

• must

• should

• ought