The accident is reported to have occurred __________ the first Sunday in February. 
#4899
A
at
B
on
C
in
D
to
推荐题目
He was deep in thought with his eyes_____ on the ceiling.
#4933
A
fixed
B
fixing
C
fix
D
to be fixing
 Richard was called in by the police to answer questions _______ the disappearance of Thomas Ripley, whose relatives were so ______ his present situation.
#4655
A
concerning; concerned about
B
concerned; worrying about
C
with regards to; concerned
D
regarding; concerning about
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