Exercise 6, Complete the question using Conditional 2 and guess the answer:

a) what would happen if you travelled through the Earth to the other side? C You would fall to the centre and then stop.

b) what  would  happen if the Earth suddenly stopped going round? C Even if the Earth stopped, we would keep moving!

c) what  would  happen if we did not have a Moon? A. There would not be any ocean tides.

d) what  would  happen if all the ice at the poles melted? C Sea levels would rise.

e) what  would  happen if there were no more electricity? B People would use candles for light and fires for heat.

f) what  would  happen if aliens received messages from Earth and decided to visit us? C. They wouldn't understand our messages anyway.