Question

--Did you scold him for his carelessness?

--Yes, but ________ it.

1. A.
   I'd rather not do
2. B.
   I'd rather not have done
3. C.
   I shouldn't do
4. D.
   I'd better not do

Answer 1

B
would rather加完成时表示对完成了的或过去了的事情的态度。意为：当时是不情愿做的。