We can't have a party if Dad doesn't agree.Unless Dad _____, we can’t have a party.
举一反三
- Since the party has been called off, we _______ decorate this house. A: can B: can’t C: have to D: don’t have to
- We didn't see her at the party yesterday evening. He ______ it. A: mustn't attend B: wouldn't have attended C: can't have attended D: needn't have attended
- ________we have enough evidence，we can’t win the case. A: once B: as long as C: unless D: since
- John suggested that we ______ have the evening party this Sunday. A: didn’t B: not C: wouldn’t D: not to
- We didn't see her at the party yesterday evening. She______. A: mustn't attend B: couldn't have attended C: wouldn't have attended D: needn't have attended