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—I must apologize for ______ ahead of time. —That’s all right. 
#32100
A
not letting you to know
B
not letting you know
C
letting you know not
D
letting not you know
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 We can't wait any longer ________ we'll miss the plane.
#30275
A
or
B
but
C
so
D
yet
Do you have any idea ______ is actually going on in the classroom?
#32996
A
that
B
what
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as
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which
Keep yourself open       we can experience the great joy that friendship can bring.
#30520
A
as if
B
so that
C
even though
D
ever since
It’s hard to imagine_____it would be like living on Mars.
#30629
A
that
B
how
C
where
D
what
Dr Yuan Longping grows ________ is called super hybrid rice, _________ has a high output.
#31971
A
what; which
B
that; what
C
that; which
D
what; what