Conditionals Type 0, Type 1

If Mary doesn't come on time, her friend... .            [will leave, leaves]

if you put salt on ice, it... .           [will melt, melts]

If Peter doesn't like his job, he .... it.            [can change, changes]

If you heat water, it ... .           [boils, will boil]

If Molly goes to the Zoo, she ... lots of animals.          [will see, sees]

If the weather is frosty, the water ... .             [freezes, will freeze]

If you are hungry, ... a toast.          [eat, will eat]

If Ann doesn't water an apple tree, it ... .          [dies, will die]

If you boil water, it ... steam.           [will make, makes]

If you want to go on holiday next month, you ... to book a hotel.           [need, will need]

If we don't protect wild animals, they ... .          [will die, die]

If you mix red and yellow, you ... orange.          [get, will get]

When pollution mixes with rain, it ... acid rain.           [will make, makes]

If you put a card in this machine, it ... you money.           [gives, will give]

If Vicky doesn't study hard, she ... pass her exams.              [doesn't pass, won't pass]

When you heat metal, it ... .             [will expand, expands]

If Ann doesn't hurry up, she ... her train.           [will miss, misses]

Unless you like this sweater, I ... it.          [buy, will buy]

Unless Mark runs fast, he ... the marathon.             [doesn't win, won't win]

When the water freezes, it ... ice.             [becomes, will become]

If you are cold, .... a coat.             [will put on, put on]

Unless you go to bed early, you .... tired in the morning.           [feel, will feel]

If the weather isn't bad, the Smiths ... a picnic on Saturday.           [have, will have]

If you are sick, you ... weak.           [feel, will feel]