题目列表(包括答案和解析)
Mr. Wang made up his mind to devote all he could ____ his oral English before going abroad.
A. improve B. to improve C. improving D. to improving
Mr. Wang made up his mind to devote all he could _______ his oral English before going abroad.
A. improve B. to improve
C. improving D. to improving
Mr. Wang made up his mind to devote all he could______ his oral English before going abroad .
A. improve B. to improve C. improving D. to improving
Mr. Wang made up his mind to devote all he could _____ his oral English before going abroad.
A. improve B. to improve C. improving D. to improving
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