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Lesson 70 When were they there?
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他们是什么时候在那里的？ |
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Lesson 7: Are You Ready for a Quiz?
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你准备好测试了吗？ |
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Lesson 9: What Do We Need for the Trip?
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去旅行我们需要做什么？ |
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Lesson Fourteen What are they doing?
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第十四课他们在做什么? |
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Lesson Nineteen What are the Obstacles— Real or Imagined?
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什么是障碍——真正的还是想象的？ |
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Lesson One is not so difficult as Lesson Five.
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第一课不像第五课那样难。 |
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Lesson Seven Whose Photos Are These?
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第七课这是谁的照片？ |
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Lesson Two is much more interesting than Lesson One.
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第二课要比第一课有趣得多。 |
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Lesson number three: the present is evanescent and the future will always astonish you one way or another.
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第三课：现实的状况只是短暂的，而未来的发展总会有教人讶异之处。 |
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Lesson one for rocket watching: arrive early.
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因此，观看火箭升空发射的第一课是：早点到。 |
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Lessons begin at 8:00. Don't be late for school.
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八点上课，别迟到了。 |
