1. If you___ a coin,the machine___working. (insert-start) 2. __the water __ if the temperature__ 100 degrees? (boil-reach) 3. If a motorbike __enough fuel,it __ . (not have-not run) 4. If you ___this button,you __ the computer. (press-turn off) 5.The mobile phone __ if you __ its battery. (not work-not reacharge)

1. If you insert a coin,the machine starts working. 2.Does the water boil  if the temperature reaches 100 degrees? 3. If a motorbikedoes not have enoughfuel,it does not run. 4. If you press this button, you turn off thecomputer. 5.The mobile phone does not work if you dont recharge  its battery.