(2019安徽改编)How time flies! We ________ in China for so long.
A.work B.worked C.will work D.have worked
the, solved, you, have, yet, problem
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did, he, in, best, exam, the
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Peter, fastest, runs, class, the, in
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finished, homework, my, has, already, been
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method, your, is, much, than, easier, mine
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