--          is your cousin?--She's fifteen years old.
#59939
A
How
B
How old
C
How many
D
How much
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It's the first time that he has been to Australia,________?
#64492
A
isn't he
B
hasn't he
C
isn't it
D
hasn't it
— ______ is a ticket to Garden Expo?— It’s about 100 yuan. 
#59857
A
How much
B
How many
C
How long
D
How often
____ will he be back? In a week. 
#59917
A
How long
B
How soon
C
How often
D
How many