Complete the sentences with thecorrect form of the verbs in Exercise

Complete the sentences with the
correct form of the verbs in Exercise 4. Then
listen and check.
1 Dont forget to switch off the lights before you
go to bed.
2 Can you.... the heating? Its really warm.
3 You shouldnt...... the TV...... at night.
4 Did you know your computer...... a lot
of electricity?
5 Its better to have a shower than a bath because
you dont....... so much water.
6 You should try to..... the number of hours you use
the air conditioning.
7 Were trying to........ so I always switch off my
computer when Im not using it.