Question

I was supposed ____ her, but I failed.

1. A.
   to help
2. B.
   to have helped
3. C.
   to be helping
4. D.
   will help

Answer 1

B
试题分析：考查be supposed to have done本应该做…而没做，句意：我本应该帮她，却没能。选B。
考点：考查虚拟语气
点评：有的词组可以表示虚拟：如：was/were going to do 本打算做却没做，would like to have done本打算做却没做。注意记忆清楚。