题目内容：

完成句子。

1.Not only did it _______ us _______ to nature and give us _______ from heavy school work. it also _______ the friendship among us.

它不仅让我们更接近自然，从繁重的学业中得到放松，也促进了我们之间的友谊。

2. These days, _______ traffic rules and _______ are not _______, _______ serious harm to life and environment. Changing this situation _______ _______ effort on the part of everyone.

近来，违反交通规则和扔垃圾很普遍，造成了对生活和环境的严重危害。改变这种情况需要每个人极大的努力。

3.And third, _______ _______ about your future. Such a _______ _______ towards life can be helpful in _______ your _______.

第三，对未来保持乐观。这样的一种对生活的积极态度有助于提高我们的情绪。

4. _______ too much on mouse clicking makes us lazier and less _______ both _______and _______.

过于依赖点击鼠标使我们更懒惰，在精神上和身体上更少创造性。