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—        did you stay in Hong Kong?　　 —  About 20 days.
#39409
A
How often
B
How soon
C
How long
D
How far
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This book is as _____ as that one. Each of them has 70 pages.
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thick
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heavy
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wide
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huge
My brother wants to be ________actor but I want to be _______NBA player.
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a, an
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We won’t start the meeting ________ the teacher arrives.
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though
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until
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 --It’s about two _________ walk.
#36011
A
hours
B
hours’
C
hour’s
D
hour