--_________ do you do some outdoor activities?--Once a week.
#39135
A
How long
B
How much
C
How far
D
How often
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 ________ the teachers is about 300 in our school and it is becoming_____________.
#43423
A
The number of, more and more
B
The number of, bigger and bigger
C
A number of, more and more
D
A number of, bigger and bigger
May works hard at her study, and she does her homework ______ every day. 
#39491
A
for herself
B
on herself
C
in herself
D
of herself