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1、 The spaceship (进入轨道) successfully yesterday.
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2、 A window of our classroom (hit) by a ball during the PE class.
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3、 A little boy (point) to the star in the sky and asked his mother a question.
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4、 There are three food (supply) in this small market near our school.
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5、 This new kind of bike is (afford) for most teenagers.
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6、 My mother has never (mistake) my favorite fruit since I was a child.
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7、(destroy) the environment will bring bad results to human beings.
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8、 The company promises a fast (deliver) service for online orders.
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9、 We can enjoy free Wi-Fi (serve) in this library.
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10、 He is a (select) reader and only reads classic novels.
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11、 The (probable) of passing the exam is very high if you keep studying hard.
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12、(学习)如果想要学好英语，你应该每天坚持说英语。(if 引导条件状语) （should 或 had better）
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13、(社交)我们应该在朋友遇到困难时帮助他们。(时间状语从句) （should 或 had better）
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14、(安全)我们应该记住火警和急救电话。（should 或 had better）
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15、(健康)你最好不要吃太多垃圾食品。（should 或 had better）
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16、(环保)大家应该尽量骑自行车或步行出行。（should 或 had better）
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17、(学习)学生们最好课前预习新课内容。（should 或 had better）
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18、(礼仪)我们应该在公共场合小声说话。（should 或 had better）
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19、(安全)孩子们应该远离河边和池塘。（should 或 had better）
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20、(生活习惯)你最好早上起床后整理床铺。（should 或 had better）