3 Complete the sentences with the correct form of the verbs in brackets. 1 If we protect (protect) wild animals, the world will be (be) a better place. 2 If we (plant) a lot of trees, birds (come) to the area 3 if he (not switch off) the lights, he (waste) a lot of energy 4 If she (not waste) water, she (save) money. (not have) clean water, they (get) il 6 fi (have) some free time, 1 (come) to the beach clean-up 5 If they