It is said that sixty percent of all energy ________ in the world today is being lost as wasted heat.
#88776
A
produced
B
producing
C
to produce
D
having produced
推荐题目
This machine is very easy _______. Anybody can learn to use it in a few minutes.
#90906
A
operating
B
to be operating
C
operated
D
to operate
The Diaoyu islands have been part of China’s territory since ancient times, ______ as important fishing grounds of Taiwan.
#92920
A
served
B
to serve
C
serving
D
having served
The mayor has announced a plan recently water pollution of the city.
#88878
A
prevent
B
preventing
C
to prevent
D
prevented
The study showed a deep fear among the old people of _____ to the care of strangers.
#91727
A
abandoned
B
to be abandoned
C
being abandoned
D
abandoning