Mr. Wang made up his mind to devote all he could ____ his oral English before going abroad. 
#98055
A
improve
B
to improve
C
improving
D
to improving
推荐题目
New ideas sometimes have to wait for years before _____ .  
#98178
A
fully accepted
B
having fully accepted
C
fully accepting
D
being fully accepted
I personally think__more listening, speaking, reading and writing is the key to__our English.
#95944
A
Doing; improve
B
To do; improve
C
Do; improving
D
Doing; improving