[单选题,7.6分] His _______ change very quickly; one mo

[单选题,7.6分] His _______ change very quickly; one moment he is cheerful, and the n

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[单选题,7.1分] Without water, _________ no plants or a

[单选题,7.1分] Without water, _________ no plants or animals. A.there will be B.th

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