Don't waste electricity and water!

Narrator:Father's going into the bathroom.He's going to have a shave.

Father:Who left the light on?

Sue:I did,dad.

Father:You mustn't waste electricity,Sue.You must always turn the light off.

Sue:Yes,dad.

Sue:I should turn it off,but I often forget.Shall I turn it off now,dad?

Father:No,I'm going to have a shave.

Sandy:Have you finished,dad?I want to have a wash.

Father:Yes,come in,Sandy.

Sandy:Who left the tap on?

Father:Er...I did,Sandy.

Sandy:You mustn't waste water,dad.You must always turn the tap off.