Question

— Carol Walker didn’t turn up last time ,did she ?

— No .She _______.We had changed our plan.

1. A.
   shouldn’t have come
2. B.
   needn’t have to come
3. C.
   didn’t need to come
4. D.
   needn’t have come

Answer 1

C
C．实际上没必要，也没来；D．本不必来，但来了。