My neighbor was like a cat on hot bricks before her driving test.A．very exitedB．sadC．relaxedD．very n

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• --- Linda late for school. --- But she arrives on time at present.A．used to beB．used to beingC．is us
• 生产者和分解者之间没有任何关系______．-生物
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• —Listen! Is Tom singing in the classroom?—No. It ____ be Tom. He has gone to Paris.[ ]A. may not B.
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