◎ 题干
______ Saturday morning I usually do my homework and ______ the afternoon I usually play tennis.
A.In; on B.On; in C.In; at D.On; by
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“______ Saturday morning I usually do my homework and ______ the afternoon I usually play tennis.A.In; onB.On; inC.In; atD.On; by…”主要考查了你对  【助动词】【介词短语】【固定搭配】【疑问词组】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。