Lớp 7 Unit 11 MD

Humans ___________________(use) the power of moving water for more than 2,000 years.

I’ll call you at 8 o’clock tonight. What ____________(you/do) then?

At present, global demand for energy__________(increase) rapidly

Three years ago,we____________(install) a solar water heating system on our roof

What _____________(happen) if non-renewable resources run out?

A small hydropower plant_________________(build) on the river in ten years time

If the electricity________________(make) from wind turbines, it is green.

We decided___________(invest) our time and effort on this new research project

You should avoid _______________(use) cars or motorbikes for short trips

Solar, win, and hydro are renewable and _______________________(exhaust)