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Jack_____out very early, for he had not shown up at breakfast.A.could have goneB.must have
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He ______ unwisely, but he was at least trying to do something helpful[1999]A.may have act
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He kept asking questions, but not a word_____.A.could we understandB.we could understandC.
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But that he saw it, he ___it.A、could not have believedB、did not believeC、could not belie
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He suddenly called my name on the street, but I could not _____ where I had met h
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Unfortunately he could not ______ the danger at that time.A、prepareB、pretendC、performD、p
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Still, he could not help thinking that if anything______, the nearest person he could cont