Beijing is the capital of China and it is one of  ______ cities in the world. 
#47633
A
big
B
bigger
C
biggest
D
the biggest
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She is a ________girl,and she does everything________.
#45041
A
careful; careful
B
carefully; carefully
C
careful; carefully
D
carefully; careful
Bob _________ exercises. He’s ______ unhealthy boy.
#45956
A
hardly ever; an
B
always; an
C
usually; a
D
never; a