问题补充：
Li Hua offered to devote all she could her written English with our mid-exam .
A. improve, to come
B. improve, comes
C. to improving, come
D. to improving, coming
答案：
A. improve, to come
B. improve, comes
(答案→)C. to improving, come
D. to improving, coming
解析：考查不定式做目的状语和with复合结构：句意：因为期中考试要到了，李华主动提出把她所有的东西都致力于提高英语的书写。第一空用不定式做目的状语，第二空填现在分词做宾语补足语，因为mid-term和come是主动关系，选C。
