摘要： -It is a long time ? I saw you last. -Yes. And it will be a time we see each other again. A.when; when B.since; before C.before; since D.when; before
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—It is a long time ____ I saw you last,
—Yes．And it will be some time ____we see each other again．
A．when; after B．after; when
C．since; before D．before; since
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