1．We are talking about a matter. The matter happened in our company last night.
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2．Dan had never seen the girl. The girl was standing behind his boss.
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3．Linda has ever seen the flower. It is the most beautiful flower.
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4．There is no doubt. He will keep his promise.
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5．The news isn't true. We'll go on a picnic this Sunday.
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答案与解析：
