Lately some scientists are experimenting ___________ white mice to ____________ this kind of medicine.
#27470
A
on,try on
B
with, test on
C
on ,test out
D
with,carry out
推荐题目
I know he hasn’t finished the work, but _________, he has done his best.
#27317
A
at all
B
in all
C
after all
D
above all
Peter will give me five sweets an apple, but in fact I don’t have a sweet tooth.
#26490
A
in search of
B
in need of
C
in case of
D
in exchange for
One evening when it was swarm, I stayed awake ___________ until half past eleven in order to have a good look at the moon by myself.
#26073
A
on average
B
on purpose
C
on sale
D
on schedule
I could see a low bamboo hut standing there ______ grass sticking out ____ the roof.
#27664
A
with… of
B
with… from
C
on… from
D
at… of
（2014年福州市高三适应性练习）23. Don’t bother your father tonight ------ he’s got a lot ____ his mind.
#25133
A
on
B
to
C
in
D
around