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We can talk with friends on the Internet _______ it’s easier and cheaper.
#58260
A
though
B
as
C
or
D
but
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---How was your climb up Mount Tai?---I didn’t believe I could do it        I got to the top．
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A
until
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unless
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Although he is a little boy,_____he speaks English well.
#55889
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/
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“_____are you going?” “I’m going to the library.”
#55929
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— ________ times a week do you go to the library? — Twice a week.
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I don’t like science _______ it’s difficult.
#55838
A
but
B
so
C
because
D
and