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1·The debate on whether to keep pets lasted forty minutes yesterday afternoon.

关于是否养宠物的争论昨天下午持续了四十分钟。

2·A report shows that people who keep pets take a lower risk of having heart disease because pets bring them much fun.

一项报告显示养宠物的人患心脏病的风险要低一些，因为宠物会给他们带来许多快乐。

3·Do you know why people keep pets?

你知道人们为什么要养宠物吗？

4·Why do you think people keep pets?

人们为什么养宠物呢？

5·Do you like to keep pets?

你喜欢养宠物吗？

6·Why do people keep pets?

人们为什么要养宠物？

7·A lot of energy is needed to keep pets.

许多精力被用来养宠物了。

8·Lesson Sixty-five Do you like to keep pets?

第六十五课你喜欢养宠物吗？

9·You need to spend a lot of energy to keep pets.

你需要花费许多精力来养宠物。

10·I keep pets.

我养宠物。