he made up his mind to devote all he could_ his oral english before going abroad.

题目

he made up his mind to devote all he could_ his oral english before going abroad.
Aimprove Bto improve Cimproving Dto improving
为什么选D

答案

lz 因为这题首先是固定短语 devote to doing sth 表示致力于.
可能楼主看到all he could纠结了
其实就是devote all to .其中he could 是定语 限定all
表示他可以做出的全部
整句翻译是 他下定决心在出国之前尽自己最大的努力或是致力于提高他的口语能力
嘿嘿 希望对你有所帮助
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