阅读下面这首唐诗，回答问题。(8分)
宿业师山房待丁公不至
孟浩然
夕阳度西岭，群壑倏已暝。
松月生夜凉，风泉满清听。
樵人归欲尽，烟鸟栖初定。
之子期宿来，孤琴候萝径。
请赏析颔联中“生”“满”两字的妙处。(4分)
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对尾联中诗人表现出来的心态，有人认为是焦急，有人认为是平和。你认为是哪一种？请结合全诗简要分析。(4分)
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