Put the verbs in brackets info the future simple or the present simple. 1 lf people .........(invent) new fuel,cars........(not/pollute) the air.2 When John ...........(come),we............(go) to the park.3 lf he...........(heve) a lot of money, he .............(buy) a computer.4 lf you ............ (exercise) more, you ..................(feel) better.5 lf we............ (be) lucky, we ............(go) on a holiday to the moon one day