My parents live in a small village. They always keep candles in the house ____ there is a power out.
#31944
A
if
B
unless
C
in case
D
so that
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Everyone stood up______ the hero came into the lecture hall.
#80447
A
while
B
instant
C
every time
D
immediately
_____ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.
#80556
A
While
B
As
C
If
D
Since
Having checked the doors were closed and ______ all the lights were off, the boy opened the door to his bedroom.
#31421
A
why
B
that
C
when
D
where
Just as too much harmony is tiresome in music,________.
#79945
A
the life of too many benefits annoys us
B
so, in life, too many benefits annoy us
C
we are annoyed with lives also of too many benefits
D
a lot of benefits annoy us in life
Modern technology has brought us so much convenience--we can now do many thingsThrough we call the Internet．
#34211
A
how
B
what
C
which
D
that