(2013·福建毕业班质检)It is said that sixty percent of all energy ________ in the world today is being lost as waste heat.
#89316
A
produced
B
producing
C
to produce
D
having produced
推荐题目
“Where is David?” “He is upstairs ______ ready to go out.”
#98439
A
to get
B
getting
C
to be getting
D
having got
I went to the newly-built super-market and found there was nothing worth_____.
#96188
A
to buy
B
buying
C
to be bought
D
being bought
They appeared     me, so I had to explain to them.
#96769
A
misunderstanding
B
misunderstood
C
to be misunderstood
D
to have misunderstood