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)