B) 按要求完成下面练习。
1. 用exercise的适当形式完成下列句子。
1) All the students go to the sports field and do together in the morning.
2) Do 3 and 4 on page 50 for homework.
3) Working in an office, I don't get much .
4) When we , we use energy.

1. exercises；2. Exercises；3. exercise；4. exercise

1.“do morning exercises”为固定短语，意为做早操，所以第一空填exercises。
2.根据“Do...3 and 4”可知此处指做练习题，exercise表示“练习题”时是可数名词，所以第二空填Exercises。
3.“get much exercise”表示得到很多锻炼，此处exercise意为锻炼时是不可数名词，所以第三空填exercise。
4.该句缺少谓语动词，when引导的时间状语从句，主语是we，动词用原形exercise，所以第四空填exercise。

2. 用because和because of完成下列句子。
1) I really like the mountain it's so beautiful.
2) you, all of us missed the train.
3) John didn't finish his homework playing computer games yesterday.
4) The food tasted great, I was so hungry.

1) because
2) Because of
3) because of
4) because

Ⅰ. Read Section B, underline the following language chunks. After that, translate and use them to complete the sentences.
阅读Section B，并将下列语块在课本上画出来，翻译这些语块，然后选用这些语块完成下列句子。
1. be good for sth
2. at a special park
3. encourage sb to do sth
4. do tricks
5. feel great
6. keep me fit/healthy
7. do sit - ups
8. use an exercise app
9. work out
10. show one's progress
11. have fun
12. baseball club
13. play many matches
14. after school
15. exercise a lot
16. help sb (to) do sth
17. play better
18. build team spirit
19. both on and off the field
20. work as a team
21. win or lose as a team
22. in the water
23. cool water
24. go swimming
25. two or three times a week
26. most often
27. one's favourite way to keep/of keeping fit/healthy
28. We work as a team, and we .
29. All of us are good friends, .
30. I think it's a good way to through playing matches.
31. In my school's baseball club, we every week.
32. He is one of members of the .
33. The exercise app can every day.
34. He in the gym two or three times a week.
35. Swimming is Kate's . She thinks it's fun.

1. 对某事有好处
2. 在一个特别的公园
3. 鼓励某人做某事
4. 玩把戏，做技巧动作
5. 感觉很棒
6. 保持我健康
7. 做仰卧起坐
8. 使用健身应用
9. 锻炼，健身
10. 展示某人的进步
11. 玩得开心
12. 棒球俱乐部
13. 打很多比赛
14. 放学后
15. 大量锻炼
16. 帮助某人做某事
17. 打得更好
18. 建立团队精神
19. 无论在场上还是场下
20. 团队合作
21. 作为一个团队输赢
22. 在水里
23. 凉水
24. 去游泳
25. 一周两三次
26. 最经常
27. 某人保持健康的最喜欢的方式
28. win or lose as a team
29. both on and off the field
30. build team spirit
31. play many matches
32. baseball club
33. show my progress
34. works out
35. favourite way to keep fit/healthy

先翻译各语块，再根据句子语境选择合适语块填空，注意人称、时态等语法变化。