11 General - Unit 3 - Lessons 5 - 6 - Houses of the future

(a)   light bulbs do a great job lighting houses and actually use 25–80% less energy than regular ones.

There’s a campaign in my city to encourage people to use fewer plastic bags. It’s organised by a group of (a)   .

I think more people are now aware of the dangers of processed and chemical products. Everyone wants to buy (a)   food, building materials and even cleaning supplies.

Students doing an (a)   degree usually spend long hours designing buildings for their projects.

(a)   have very stressful jobs; they have to manage big projects, which includes organising construction site workers and building materials.

The (a)   of locking systems increases the security of your home.