--I hear Jack Chan will come to Laiwu next week. --Really? _______ he comes, my younger sister will be very happy,
#58506
A
If
B
Until
C
Unless
D
Before
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#57903
A
when
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since
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until
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#56158
A
How long
B
How often
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How soon
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#55663
A
So that
B
First of all
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Even though
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#57124
A
but
B
though
C
unless
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until