Question

Distant education is playing a more and more important role, making it possible for people to be educated ________ they do．

1. A.
   however
2. B.
   wherever
3. C.
   whenever
4. D.
   whatever

Answer 1

D
本句意为“远程教育正起着越来越重要的作用，使得人们能够接受教育，不管他们是干什么的”。do后面缺少宾语，故选D项。