问题
选择题
The artist made up his mind to devote all he could ______ his English before going abroad. [ ]
A. improve
B. to improve
C. to improving
D. improving
答案
答案：B
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The artist made up his mind to devote all he could ______ his English before going abroad. [ ]
A. improve
B. to improve
C. to improving
D. improving
答案：B