Michael failed the exam. He（）have spent so much time playing computer games and chat-ring online.
A: mustn’t
B: couldn’t
C: wouldn’t
D: shouldn’t
A: mustn’t
B: couldn’t
C: wouldn’t
D: shouldn’t
举一反三
- He has been so hard working. He ___ failed in the exam. A: couldn't have B: wouldn't have C: mustn't have
- He has been so hard working. He ___ failed in the exam. A: couldn't B: mustn't C: wouldn't
- You failed your math exam again. You ______ too much time on football. A: shouldn’t have wasted B: mustn’t have wasted C: couldn’t have wasted D: needn’t have wasted
- Most of the students failed in the final exam. It ______ easy. A: can't be B: shouldn't be C: mustn't have been D: couldn't have been
- She（）have missed the first bus, or she（）be here so early. A: needn't, shouldn't B: couldn't can't C: shouldn't, mayn't D: mustn't, wouldn't