-- ______ does your sister study for the English exam? --By asking her teacher for help.
#56343
A
How
B
Where
C
What
D
Why
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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
Learning to write is learning to think. You don’t know things clearly _________ you can writethem down.
#55292
A
unless
B
if
C
since
D
whether