摘要：30．You her in her office last Friday; she's been out of town for two weeks.A．needn't have seen B．must have seenC．might have seen D．can't have seen31．If you want to sell your product, you must it.A．advertise B．advertise for C．advertise on D．advertise to32．The point is not who said the words, they are true or not. A．but whether B．and whether C．but how D．and how

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