Read these sentences and fill in the gaps with the correct word. Choose the correct variant. 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.

save, collect, build, use
collect, save, build, save
use, save, build, collect
build, use, collect, save

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