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单词辨音
A.
congrat
u
late
B.
m
u
sic
C.
poll
u
te
D.
exc
u
se
Thank you _________ everything.
A.
for
B.
at
C.
of
D.
on
单词辨音
A.
pit
y
B.
rel
y
C.
cit
y
D.
luck
y
Water pollution ________ waste from factories and cities become more and more serious.
A.
causing from
B.
caused by
C.
caused with
D.
causing by
Cattle ________ one cause of the problems which many parts of the world have become deserts.
A.
is
B.
are
C.
has
D.
have
We've no time to play because we've a lot of ________ exercises to do.
A.
write
B.
writing
C.
written
D.
wrote
In the forest, the ground is always covered with ________ leaves.
A.
fall
B.
falling
C.
fell
D.
fallen
He couldn't go into his room, for he had his key ________.
A.
lose
B.
lost
C.
losing
D.
been lost
Our teacher gave us a ________ answer to the question.
A.
suggestion
B.
suggested
C.
suggesting
D.
suggest
After two years of hard work, his English had been greatly ________.
A.
improved
B.
improves
C.
improving
D.
improve
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