—_____ does your brother go online?  —Let me see. Maybe two or three times a week.
#56066
A
What time
B
How long
C
How often
D
How soon
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Earth is becoming more and more polluted. ______, people will move to Mars one day.
#55145
A
In order to
B
So that
C
As a result
D
Because of
Linda has been drawing ______.
#57560
A
since 10 years
B
for 10 years ago
C
since 2002
D
in 2002