8.They shouldn't/ couldn't have tried to defend the case. It was obvious they’d lose.
A: shouldn't
B: couldn't
C: 无
D: 无
A: shouldn't
B: couldn't
C: 无
D: 无
举一反三
- 5.He couldn't get / couldn't have got through when he tried to call. A: couldn't get B: couldn't have got C: 无 D: 无
- But for the worker’s help, we _______ . A: shouldn’t succeeded B: couldn’t have succeeded C: won’t succeed D: couldn’t succeed
- 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
- Thedoor_____open,nomatterhowhardshepushed. A: shouldn’t B: couldn’t C: wouldn’t D: mightn’t
- You ______ have said that, now Grandma"s really angry. A: shouldn"t B: couldn"t C: wouldn"t D: needn"t