1 . Students should try to keep a ________ (平衡) between schoolwork and relaxation. (根据汉语提示单词拼写)

2 . She tried to be nice by secretly adding ________(黄油) to his bread, but it turned out to be a mistake.   (根据汉语提示单词拼写)

3 . Green living i__________ activities that help the planet stay in a b__________ mode and support future generations. (根据首字母单词拼写)

4 . 词性转换
1. present:n. ________
2. environment:adj.________
3. promote:n.________
4. organize:n. ________
5. vary:adj._________
6. industry:adj.________
7. recycle:n.________
8. health:adj.________
9. harmony:adj. ________
10. balance:adj.________

5 . The sidewalks (人行道) were paved with b__________ and lined with trees. (根据首字母单词拼写)

6 . You need a good sense of ________(平衡) to ride a bicycle. (根据汉语提示单词拼写)

7 . Later, the valuable stone was found b________ some old bricks. （根据首字母单词拼写）

8 . These policy changes could have ________ effects on the whole economy. （根据句意填空）

9 . From the Internet, we can know the valley is three miles long and half a mile b________.(根据首字母单词拼写)