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---Sorry, I’m late for class again.---Is it ______ you stayed up last night?
#56457
A
why
B
how
C
because
D
when
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He met many problems------ he was going over his lessons.
#57608
A
before
B
as soon as
C
since
D
while
We don’t look the same , _____ we are twins.
#57870
A
so
B
though
C
and
D
because
—_______ is the meeting room, Mrs. Smith?  —It’s about 20 meters long and 10 meters wide.
#55484
A
How big
B
How far
C
How tall
D
How long
His hobby is ________ watching TV ________ playing the piano．It’s reading books．
#58415
A
either；or
B
both；and
C
neither；nor
D
not only；but also
---________ when does that shop stay open?       ---About midnight.
#57784
A
Since
B
Until
C
Before
D
After