He devoted all the time his research .A. to doB. doingC. to doingD. did

发布时间：2020-08-17 01:51:39

He devoted all the time      his research .
A. to do
B. doing
C. to doing
D. did

网友回答

A. to do
B. doing
(答案→)C. to doing
D. did
解析：考查词组：devote all the time to doing，致力于做…,句意：他所有时间都致力于他的研究。选C。
以上问题属网友观点，不代表本站立场，仅供参考！