专项练习
1. We __________ for her because she never came.
A. neednt wait B. shouldnt have waited
C. mustnt wait D. mustnt have waited
2. Where is my pen? I __________ it.
A. might lose B. would have lost
C. should have lost D. must have lost
3. Janny __________ have kept her word. I wonder why she changed her
mind.
A. must B. should C. need D. would