Beijing ______a lot in the past ten years. Now it has become one of the biggest modern______ in the world. 
#38493
A
changes, cities
B
changed, city
C
changed, cities
D
has changed, cities
推荐题目
There ________ elephants if we don’t protect them now.
#40105
A
will have no
B
won’t be any
C
won’t be some
D
will be some
The old man _________ in Shanghai, but he _________ in Haikou now.
#40016
A
be born; live
B
was born; live
C
is born; lives
D
was born; lives
 --- Could you tell me_____ ? ---- Certanily. In half an hour.
#41620
A
when will the high speed train arrive
B
when the high speed train will arrive
C
when would the high speed train arrive
D
when the high speed train would arrive