◎ 题干
用所给词的适当形式填空。
1.They are trying to do something _____ (help) the old.
2. If at first you don't _____ (success) ,try,try again.
3. My cousin is used to _____ (study) with his new friends in Australia.
4. If Simon _____ (have) time next weekend,he will go to the zoo.
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“用所给词的适当形式填空。1.They are trying to do something _____ (help) the old.2.If at first you don't _____ (success) ,try,try again.3.My cousin is used t…”主要考查了你对  【实义动词的单数第三人称形式】【实义动词】【不定式】【动名词】  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。