The invention of steam engine greatly sped up the industrial revolution, which _____ a lot to the take-off of the world.
#68592
A
led
B
contributed
C
constructed
D
exposed
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China’s efforts on food production and safety will after the new food law is introduced.
#63886
A
show off
B
turn off
C
put off
D
pay off
. He was late for the meeting because the bus he took ______ halfway.
#76946
A
broke in
B
broke down
C
broke out
D
broke up
The Chinese Vice-President Xi Jinping _______ visit the United States on Feb 13 on a three-country tour.
#70742
A
set out to
B
got down to
C
looked forward to
D
lived up to