Shanghai, China’s biggest and the most dynamic city, which______ in the Yangtze River Delta, is playing a leading role in the country’s economy. 
#102749
A
is situated
B
situated
C
has situated
D
is situating
推荐题目
Ladies and gentlemen, please fasten your seat belts. The plane__________.
#102288
A
takes off
B
is taking off
C
has taken off
D
took off
Great as Newton was, many of his ideas _______ today and are being modified by the work of scientists of our time.
#102473
A
are to challenge
B
may be challenged
C
have been challenged
D
are challenging
The whole family _______ to Shanghai for holiday next week.
#103016
A
is going
B
are going
C
goes
D
have gone
  He is too careless and he _______ keys.
#104138
A
always lost  
B
always loses
C
is always losing
D
will always lose