• 2022-05-28
    You smoke in class.
    A: don't have to
    B: must
    C: have to
    D: mustn't
  • D

    内容

    • 0

      You must have been to the Great Wall,____________? A: mustn’t you B: haven’t you C: aren’t you D: must you

    • 1

      You __________ help me if you don't have time. I can do the job myself. A: aren't able to B: don't have to C: mustn't

    • 2

      The police must have caught the thief, _____? A: mustn't they B: havn't they C: didn't they D: don't they

    • 3

      - Must I wait for you here now? [br][/br]- No, you _______. You may be back in half an hour. A: don’t have to B: mustn’t C: can’t D: shouldn’t

    • 4

      But you have to study hard, (). A: mustn't you B: won't you C: don't you D: oughtn't