Complete the first conditional sentences with the correct form of the verbs in brackets. 1 Mum and Dad... (worry) about us if we... (not ring) them and say we're going to be late, 2 We... (not play) computer games after lunch if Dad... (need) to use this laptop. 3 People... (may be) much healthier in the future if scientists... (find) new ways to keep our bodies young, 4 If we... (not leave) home now, we... (not arrive) in time to catch the bus. 5 If Robbie... (want) to meet us this weekend, he... (definitely / email) us.