E篇 66到70的答案

66、Yes,they do.
67 、They feel happy and satisfied witn life.
68 Because the extra sleep not only makes them feel more energetic,but also may increase their immune system.
69 Their sleeping schedule fits with society's rule of getting up early for study or work.
70 Teenages

1。they do not complain.
2.they feel healthier.
3.because their sleeping schedule fits with society's rule of getting up early.
4.extra sleep.
5.Owls.
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