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.