问题

Professor Black has been working in the forest for years, _____ to the research of wild plants and animals [ ]
A: devoted
B: devoting
C: to devote
D: and devote
B: devoting
C: to devote
D: and devote
正确答案是:
同类题型
have no dreams ____ to have a happy life.
What’s wrong with you—_________________.
We started climbing the hill in the early morning we could watch the sunrise.
We have to ___the wheat as soon as possible because a storm is on the way
As a surgeon, I cannot _____any mistakes; it would be dangerous for the patient.