It is said that sixty percent of all energy ________ in the world today is being lost as wasted heat.
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A
produced
B
producing
C
to produce
D
having produced
推荐题目
 Mrs. White showed her students some old maps          from the library
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A
to borrow
B
borrowed
C
to be borrowed
D
borrowing
When caught         in the exam,he begged for my pardon and tried      punishment.
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A
cheating;escaping
B
cheating;to escape
C
to be cheating;escaping
D
to be cheating;to escape
Besides _____, she is kind and tender.
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A
beautiful
B
being beautiful
C
she beautiful
D
is beautiful