夯实基础
I 根据汉语意思补全句子
1. There are two _______ (湖) in the park.
2. We eat _______ (各种各样的) moon- cakes on the Mid-Autumn Day.
3. I want to be a _______ (科学家).
4. We should _______ (保护) environment.
5. Scientists say that seventy-four different kinds of living things go _______ (灭绝的，绝种的) every day.
