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
Is there a letter ________ a postcard –There’s a letter.
From the date________on the coin, we knew that it was made 500 years ago [ ]
. You shouldn’t only trust him. You’dbetter the truth of the whole thing foryourself.
He was crazy about rock music he almost spent all his free time listening to it.