1. If one (presses) this button, one gets boilingwater.
2. After finishing allactivities, you should make sure that you have (unplugged) all the appliances.
3. If there is adanger of fire, they always (cut off)electricity.
4. The first thing youhave to do when you want to start it is (toplug in) the cord to the socket.
5. If it is still toocold, you have to (switch on) theheater.
6. They usually (fit in) the equipment with extra safetysystem.
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