Modals for advice, obligation/prohibition, necessity and lack of necessity

Choose the correct option. Students _______ pay attention in class.

• ought
• should
• shouldn’t
• ought not

Which is the most formal option? This is a disaster. What _______ do?

• shall we
• shall I
• should we
• ought we

"Which advice is not logical for this situation? Lauren wants her parents to give her morepocket money."

• She should offer to help more around the house.
• She ought not to argue with her parents.
• She shouldn’t show her parents she is responsible.
• She should explain the situation to them calmly.

Which answer is incorrect? ‘Should Alan go on Big Brother?’ ‘_______’

• Yes, he should.
• Yes, he ought to do it.
• No, I don’t think he should.
• No, I think he oughtn’t.

Which sentence is correct?

• I don’t think you should tell him what happened.
• The doctor doesn’t think I should to go on a diet.
• We don’t think they ought to not keep animals in those conditions.
• My dad thinks I shouldn’t to go out with Steve any more.

Which sentence is incorrect?

• I’ve got to hand in my assignment by Tuesday.
• He’s to go to the dentist this afternoon.
• Sorry, but we have to leave now.
• They’ve got to work until 8 p.m. tonight.

Which sentence is incorrect?

• What had you to do in the test?
• We’ve had to cancel the race because of the weather.
• Does he have to wear a uniform at work?
• You’ll have to work harder next year.

In which sentence can't you substitute must with have to?

• You must register online before you can make a purchase.
• I haven’t seen my grandma since Christmas. I must see her soon.
• You must answer all the questions on the test.
• Claire must wear glasses for driving.

Which sentence is correct?

• Last month, the organisers must cancel the competition.
• You must to send in your new competition entries by 14th July.
• You must include your name, address and age.
• Winners will must accept the final decision of the organisers.

Whiche sentence hasn't got the same meaning of the others?

• It is forbidden to use this exit except in an emergency.
• You can’t use this exit in an emergency.
• You mustn’t use this exit except in an emergency.
• You must use this exit only in an emergency.