Question

-Mum, may I surf the Internet?

-You can do ________ you want on condition that you stay at home．

1. A.
   whatever
2. B.
   which
3. C.
   that
4. D.
   all what

Answer 1

A
do后面缺少宾语，能作宾语的只有A、D两项；all不与what连用，故选A项。