Question

— Linda hasn’t shown up yet.
— It’s strange. She ____

1. A.
   could
2. B.
   might
3. C.
   must have
4. D.
   should have

Answer 1

D
考查情态动词。should have done 本应该做某事，而实际上没有做。句意：琳达还没有出现。真奇怪，她本该出现的，所以选D，should have后省略了shown up。