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Miss Li didn’t leave here _________I returned this morning.
#58295
A
until
B
after
C
when
D
if
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Run for more than half an hour every day, ________ you can lose your weight easily.
#55293
A
or
B
and
C
but
D
unless
Sometimes I feel bored and don’t  know ______ to do.                          
#55615
A
how
B
why
C
what
D
where
He met many problems ______ he was going over his lessons.
#58104
A
before
B
as soon as
C
since
D
while
 Daisy has been learning Putonghua __________ the age of five.
#55169
A
at
B
since
C
for
D
in
It's 9:30 pm, children! ______ is time to go to bed.
#57639
A
That
B
It
C
This
D
They