The research showed beyond ________ that smoking contributes to heart diseases.
#4940
A
wonder
B
doubt
C
problem
D
use
推荐题目
He is really considering ______ himself to ______ these children of the poor mountain village.
#4822
A
to devote; educating
B
devoting; educating
C
devoting; educate
D
to devote; educate
_________to reach them on the phone, we sent an email instead.
#4947
A
Fail
B
Failed
C
To fail
D
Having failed
