Mr. Wang decided to devote all his time_______ his spoken English before going abroad.
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A
improve
B
to improve
C
improving
D
to improving
推荐题目
Some advertisements，like the environmental protection advertisement ______ to our conscience or our desire to be worthy citizens.
#82398
A
adapt
B
attach
C
appeal
D
adjust
Dr. Bake is a professor of physics. ________，he is a famous writer.
#69895
A
In all
B
In brief
C
In fact
D
In addition