单项选择题

Why are you so late I ______ for you all the time.

A. have been waiting
B. am waiting
C. have waited
D. will wait
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单项选择题
Rose started her ______ life as a director.
A. professional
B. profession
C. professor
D. professionally
单项选择题
She noticed the old lady's hand ______ constantly during the talk.
A. shake
B. to shake
G. shaken
D. shaking
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