Complete the sentences. Use present perfect. 1)Mr Johnson (become) a writer . 2) Bob and Charles (be) to the States many

1. Mr. Johnson has become a writer. 2. Bob and Charles have been to the States many times. 3. Have you swum in the Pacific? 4. We have not done our lessons. 5. I have not decorated the hall. 6. The girls have jumped high. Their results are very good. But they have run 5 kilometres badly. 7. Betty has begun learning English. 8. Polly has rung up Doctor Gordon. 9. Has Bros come back? - No, he hasn\'t. He never comes back earlier than six. 10. Jane says she has not seen any of the Harry Potter films before.