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Mr. Wang made up his mind to devote all he could his oral English before going a

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Mr. Wang made up his mind to devote all he could his oral English before going a

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

试题答案

D

此题中包含固定短语devote…to,其中to 为介词,后面应接定名词。动词devote后接的宾语为all,all又为先行词,后又包含一个定语从句:he could (do)。此题很容易误以为could后应接动词原形,而易选为A。答案为D。