翻译句子（2）：
1、我必须在五点前做完所有的习题吗?不,你不必.
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2、别错过观看篮球赛,
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3、他在做出决定时有困难.
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4、我们经常在课后聊天度过一段快乐的时光.
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5、抱歉让你们一直等了我两个小时.
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6、我们期待着有一个没有作业的假期.
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7、青少年应该奉献些时间照顾老人.
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8、他对踢足球痴迷.
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9、我妹妹对集邮感兴趣.
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10、学生们正忙于准备期末考试.
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11、他全身心地投入练习弹钢琴.
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12、她感觉不舒服,她不想吃任何东西.
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13、你介意我打开电脑吗?你最好不要./ 当然不介意.
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14、他喜欢游泳甚过打羽毛球.
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15、他每天花半小时练习绘画.
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16．咱们去慢跑,
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17．我妈妈习惯在周末整理房屋.
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18．你在学英语方面有问题吗?
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19．昨天的这个时间我们听到他正在唱一首外语歌.
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20．当我经过操场的时候,我看到他们在踢足球.
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21．在观看电影时,我们必须保持安静.
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