________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
Tony is said ________ to New York, and now he is studying medicine in a famous college in America.
#91845
A
have gone
B
to have gone
C
going
D
to go
I worked as hard as I could _______ for the final exam.
#94487
A
to prepare
B
prepare
C
preparing
D
prepared
The criminals ______ in a hotel the other day were connected with a murder(谋杀).
#88207
A
arrested
B
to be arrested
C
being arrested
D
arresting
. — Did Peter fix the computer himself?— He __________, because he doesn’t know much about computers.
#98534
A
has it fixed
B
had fixed it
C
had it fixed
D
fixed it
We had an anxious couple of weeks, ____ for the results of the experiment.
#91142
A
wait
B
to be waiting
C
waited
D
waiting