he devoted his whole life to ____ the children in the poor mountainous district.A.taughtB.teachesC.teachingD.teach

问题描述:

he devoted his whole life to ____ the children in the poor mountainous district.
A.taught
B.teaches
C.teaching
D.teach

C teaching the children in the poor mountainous district是动名词短语做介词to的宾语
A. taught
B. teaches
D. teach
后三个都是动词形式,不能做宾语。

D,用原型,devote life to do

C
to 是介词