Beijing ______a lot in the past ten years. Now it has become one of the biggest modern______ in the world. 
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A
changes, cities
B
changed, city
C
changed, cities
D
has changed, cities
推荐题目
The exchange students from England_____ in China in a week.
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A
arrive
B
have arrived
C
are arriving
D
will arrive
This pair of shoes ________ hand, and it _______ very comfortable .
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A
is made with; is felt
B
are made from; is felt
C
are made of; feels
D
is made by; feels
In ten years, John __________ an astronaut.
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A
will be
B
is
C
was
D
be