--_____ have you been a nurse，Anna？
A. How often
B. How far
C. How long
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--I _____ eat vegetable.--But they are good for your health!We should eat them every day.
A. often
B. always
C. seldom
He is _____ player in Houston Rockets.
A. the tallest
B. taller
C. tall
____ the old man is，_____ he feels.
A. The busy.the happy
B. The busier.the happier
C. Busy，happy
The Yellow River is the ____ river in China.
A. second longest
B. second long
C. second longer
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