Ответ: 1) Mrs Johnson has become a writer.2) Bob and Charles have been to the States many times.3) Have you swim swung in the Pacific?4) We haven’t done our lessons.5) I haven’t decorated the hall.6) The girls have jumped high. But they have runned 5 kilometres badly.7) Betty has begun learning English.8) Has Polly ringed up Doctor Gordon?9) Has Boris come back? 10) Jane says she hasn’t seen any of the Harry Potter films before.