— These days I can only sleep for four or five hours at night as I’m too busy with my research work..— If you keep going on like that, you are sure to ______ sooner or later.
#68043
A
get down
B
break down
C
calm down
D
put down
推荐题目
The light ________ and the room became complete dark. 
#66330
A
put out
B
went on
C
put off
D
went out
With a large amount of work _______, the chief manager couldn’t spare time for a holiday.
#70600
A
remained to be done
B
remaining to be done
C
remained being done
D
remaining to do
The system of Braille is really _____________ to the blind.
#64205
A
of great useful
B
great useful
C
great use
D
of great use