Question

Mr. Wang decided to devote all his time_______ his spoken English before going abroad.

1. A.
   improve
2. B.
   to improve
3. C.
   improving
4. D.
   to improving

Answer 1

D
本题考查devote的用法。devote sth to doing sth 把…献给做某事；devote oneself to doing sth 献身于做某事。