摘要： How many hours do you sleep every night?
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—How many hours do you sleep every night?
—________.
—________.
[ ]
A. three times a day
B. twice
C. hardly ever
D. eight
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B. twice
C. hardly ever
D. eight
—_____do you sleep every night?
—Six to eight hours.
—Six to eight hours.
[ ]
A. How long
B. How often
C. How
D. How many times
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B. How often
C. How
D. How many times