The president gave a detailed _____ of his proposal at the meeting.(201612)
A. explanation
B. search
C. balance
D. word
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Last year the employees in our department were so busy _____ they were not able to take a vacation.(201612)
A. which
B. what
C. who
D. that
It was not until yesterday _____ they decided to re-open the business talk.(201706)
A. when
B. which
C. that
D. as
We have to _____ the cost of setting up a new hospital in that area.(201706)
A. work out
B. put on
C. fill up
D. carry on
We need to _____ an eye on all the activities to make sure that people stay safe.(201706)
A. catch
B. keep
C. take
D. bring