They__________on the program for almost one week before I joined them, and now we ________on it as no good results have come out so far.
A. had been working; are still working B. had worked; were still working
C. have been working; have worked D. have worked; are still working
He was a bit nervous. He _________his spare breath with a soft sound that was almost heard by the audience.
A. gave out B. let out C. picked out D. blew out.
Not until he went through real hardship ________the love we have for our families is important.
A. had he realized B. did he realize C. he realized D. he had realized
Measures have been taken to fight ________recurring food safety problems, but there is still a long way to go before China can rid itself ________ these issues.
A. for; of B. for; from C. against; of D. against; from
“Only two centimeters higher, _______break the world record,” encouraged the coach.
A. you will B. and you will C. or you will D. will you
This nationwide smog should serve as a reminder to all, indicating a high time that we ______ on what we've done to the environment.
A. have reflectedB. are reflecting C. will reflectD. reflected
