我先写完老师布置的作业与练习，如果写完了，时间还剩下半个钟头，我会去睡觉。
I'll finish the teacher assigned homework and exercises, if finished, time left half an hour, I will go to sleep.
我先写完老师布置的作业与练习，如果写完了，时间还剩下半个钟头，我会去睡觉。
I'll finish the teacher assigned homework and exercises, if finished, time left half an hour, I will go to sleep.
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