Relier Pairs First ConditionalVersion en ligne Exercise to practice the use of first conditional. par Marco Gabriel Chicaiza 1 If you use a reusable water bottle, 2 He will damage the environment 3 I will start using a reusable shopping bag 4 Will it harm the environment 5 If I use the air conditioner less, 6 It will reduce pollution if you use public transportation. will I save energy? you will reduce waste. if I drive to work every day? if he doesn't start recycling. if it will help the environment.