9.6.9.1 Put the verbs in the correct Which sentences need a comma? When everyone in the village tense. Identify the type of conditional. (have) clean drinking water we will start 3 1 thinking about building a new school. 2 If we (not/find) a way to protect endangered species they will disappear 3 If I were you I (volunteer) for a charity this summer. 4 She (not/realise) poverty was a serious problem in the city if she hadn't visited the slums. 5 If the event had been advertised on social media we ... (raise) a lot more money. 6 There (be) fewer homeless people on the streets if we build more shelters. 7 The children (not/learn) to read and write if they don't go to school. 8 Unless we protect black rhinos they (become) extinct.