单项选择题

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A. Doing homework. B. Fine, thank you.
C. Very good. D. Writing a book.
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单项选择题
In total darkness, doves ______.
A. use landmarks

B. don’t know which way to fly
C. fly back home

D. wait for the stars to appear
单项选择题
A. He doesn’t like Li.B. He has to take care of her daughter.C. He will see a doctor.D. He is ill.
A. He doesn’t like Li.
B. He has to take care of her daughter.
C. He will see a doctor.
D. He is ill.
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