【小题1】All the people bBurst into laughter when they heard the funny story.
【小题2】We should pprotect the wild animals. It is very important.
【小题3】I have to get ffamiliar with the new classmates in the new school.
【小题4】Never play jjokes on the disabled people.
【小题5】It is a ccustom to eat moon cakes on the Mid-Autumn Day.
【小题6】It isobvious that you are wrong, I am right.（明显的）
【小题7】When he saw the snake, he held hisbreath and dared not say a word.（呼吸）
【小题8】There were too manycustomers in the supermarket and I had to go back home.（顾客）
【小题9】It is bbeneficial to get up early and do some sports.（有益的）
【小题10】I don’t think that we should agree with him. On thecontrary , I will say no.（相反）
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解析：
【小题1】考查时态。主从句的时态要一致，根据heard可知，主句用过去时。故填burst。
【小题2】句意“我们应该保护野生动物，这样做很重要。”，故填protect。
【小题3】考查固定短语。get familiar with sth变得对......熟悉，故填familiar。
【小题4】考查固定短语。play jokes on sb开某人的玩笑，故填jokes。
【小题5】句意“在中秋节吃月饼是一个风俗习惯。”custom风俗，故填custom。
【小题6】考查固定句型。It is obvious that...“......是显而易见的”。故填obvious。
【小题7】考查固定短语。hold breath屏住呼吸，故填breath。
【小题8】考查名词。customer顾客，many修饰可数名词，故填customers。
【小题9】考查词性转换。beneficial有益的，早起做一些运动是有好处的。故填beneficial。
【小题10】考查固定短语。on the contrary相反，故填contrary。