Scientists _______ a lot of experiments on animals, hoping to find and effective way to cure the patients who had AIDS.
#70454
A
carried on
B
carried out
C
carried away
D
carried off
推荐题目
I forgot his phone number that day.I had to ___ the phone book to find it.
#83473
A
look up
B
look through
C
look to
D
look at
The students are _____ to hand in the exercises before class.
#81685
A
wished
B
hoped
C
enjoyed
D
promised
If one of the computers _______, the whole networks would be unable to work.
#66006
A
broken down
B
broke up
C
broke out
D
broke in
Can you ______ me a job when I get there? You know, I have to work in order to pay for my schooling.
#70854
A
provide
B
guarantee
C
arrange
D
apply