Ten students in our class will celebrate their birthdays ______ October. 
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A
in
B
on
C
of
D
at
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---____ is Peter?    --- He_____ fine.
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A
How, are
B
What, is
C
How, is .
D
Who, is
---- ________ will your father come back from Beijing? ---- In two days.
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A
How often
B
How long
C
How many
D
How soon
 — _____do they surf on the internet ?—Twice a week. 
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A
How soon
B
How much
C
How many
D
How often