【题目】Because he _____himself to _____his research, he spared no time to spend to weekend with us.
A. was devoted; doing B. devoted; do
C. was devoted; do D. devoted; doing
在线课程【答案】D
【解析】考查固定词组。句意：因为他献身于他的研究，所以他不惜一切地和我们一起过周末。devote oneself to doing sth./be devoted to doing sth.献身于做某事，根据句意可知答案为D。