Question

A person with good manners never laughs ________ people when they are _________ trouble.

1. A.
   on, in
2. B.
   in, at
3. C.
   on, at
4. D.
   at, in

Answer 1

D
考查介词。laugh at sb.“嘲笑某人”，be in trouble“陷入困境中”。故选D。