Question 17: a. Big cities need a lot of energy because millions of people live there, and they use electricity when they work or stay at ho...

Question 17:

a.        Big cities need a lot of energy because millions of people live there, and they use electricity when they work or stay at home.

b.        When cities grow bigger, they need more power stations that make electricity, so the government must build them before the population increases too much.

c.        Solar panels and wind turbines are new energy sources that help cities, and they are better because they don't pollute the air we breathe.

d.        If cities use green energy, they can grow faster because clean air attracts more people who want to live in healthy places with families.

e.        Smart cities save energy when they turn off streetlights automatically, and this helps them grow while they protect the environment for future generations.

A. a-b-c-d-e                                        B. a-e-d-b-c                                        C. a-c-e-d-b                                        D. a-d-b-c-e