Question

-You ________ that．

-I’m sorry, but I simply ________ what I was told to．

1. A.
   needn’t have done; ought to do
2. B.
   needn’t have done; had to do
3. C.
   shouldn’t have done; ought to do
4. D.
   shouldn’t have done; ought to do

Answer 1

B
本题考查情态动词的用法。根据语境可知第一空应选needn’t have done, 表示“本来不必要那样做”；后一空由simply推出选had to do。