Все слова нужно написать с маленькой буквы через запятую. Не забудьте поставить пробел после каждой запятой. Нумеровать слова не нужно.
use, collect, build, save
1. We can nesting boxes for birds.
2. People need to less heat and air conditioning.
3. We can rubbish for recycling in the park every Saturday.
4. We should water because it is very important resource for people and the environment.
1. We can build nesting boxes for birds.
2. People need to use less heat and air conditioning.
3. We can collect rubbish for recycling in the park every Saturday.
4. We should save water because it is very important resource for people and the environment.