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Leave your key with your neighbor      you lock yourself out one day.
#32231
A
as long as
B
even though
C
in case
D
as if
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 .I got caught in the rain and was wet all over. _____I had followed my mother’s advice and take an umbrella with me!
#34214
A
As if
B
Even if
C
If only
D
Only if
It is uncertain ___ side effects these weight-loss drugs will bring about, although hundreds of thousands of patients have taken it. 
#32181
A
that
B
whether
C
how
D
what
一Why didn’t you try your best to get on the bus?一I tried to,but   I could,it started moving.
#31704
A
when
B
after
C
until
D
before
______ it is hoped that college students should be equipped with the ability to take a good set of notes, this is not always the case.
#33825
A
When
B
While
C
As
D
Unless
 Scientists say it will be five or six years __________ it is possible to test this medicine on humans.
#30743
A
after
B
before
C
since
D
when
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