Mr. Wang made up his mind to devote all he could ____ his oral English before going abroad.
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A
improve
B
to improve
C
improving
D
to improving
推荐题目
It has been raining for nearly one week，________ the river rise a lot.
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A
making
B
makes
C
made
D
to make
Whenever I was in trouble, he would do what he could ________ me.
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A
help
B
helping
C
tohelp
D
helped
He was sent to Australia _______ when he was ten years old.
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A
to be educated
B
to educate
C
educating
D
to be educating