________the working efficiency, the boss allows the employees to have a coffee break.
#96343
A
Improving
B
To improve
C
Having improved
D
Improved
推荐题目
On average, 50 percent of those _____ said they would prefer to see Mr. Obama win the 2012 ticket, _____to just nine percent who prefer Mr. Romney.
#90909
A
to be questioned; compared
B
having questioned; comparing
C
questioned; compared
D
questioning; comparing
When ___our culture with those of other countries, we find ours is quite different.
#96948
A
compared
B
comparing
C
to compare
D
being comparing
Sophia got an e-mail ________ her credit card account number.
#91097
A
asking for
B
ask for
C
asked for
D
having asked for
Our teacher is clever and hardworking, but not very good at _______ his ideas to us.
#95817
A
getting over
B
getting across
C
getting on
D
getting into