专四
A．has found
B．was finding
C．had found
D．would find
考查间接引语动词时态的选择。主句谓语动词用的是过去时，而“发现”的动作发生在“说”之前，因此要用过去完成时，故选C。
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A．ought to have
B．must have
C．may have
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A．that you should think
B．by what you are thinking
C．that you would think
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C．as good enough
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根据以下资料，回答题：
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