Carbon dioxide ___ from burning fuels is the most common of the so-called greenhouse gases.
#4678
A
producing
B
having been produced
C
to be produced
D
produced
推荐题目
.The teaching building is _________ by many trees, some ______ over 30 metres.
#4739
A
surrounded, measuring
B
surrounded, measured
C
surrounding, measured
D
surrounded, measure
The best job is _____which uses your skill in doing something together with your interest in the subject.
#4844
A
something
B
the one
C
one
D
it
In order to change attitudes _______ employing women, the government is bringing in new laws.
#4905
A
about
B
of
C
towards
D
on
But for their help, we ____ the program in time．
#4795
A
can not finish
B
will not finish
C
had not finished
D
could not have finished