He took the machine to pieces to find out how it             .
#78504
A
progressed
B
operated
C
equipped
D
managed
推荐题目
They use specially trained dogs to _____ their sheep at night.
#66919
A
take care
B
get along with
C
watch over
D
turn to
The experiment  the discovery of a cure for cancer.
#80773
A
resulted in
B
resulted from
C
brought in
D
ended in
A thought suddenly ___ me.
#83450
A
beat
B
happened to
C
struck
D
to come up to