Помогите решить задание.
1. readers 2 watched, 3 going, 4 reading, 5 complaibed,6,haven,7 danced, 8 buyer, 9,visiting 10 meeting,11 helping, 12 finished 13 speaker, 14 doing, 15 studied, 16 helped, 17 called, 18 traveler, 19 writer, 20 то что в четвертом