Open the brackets to complete the text.
Mr. John Green is 70 years old. He (1. be) a real collector of coins. He (2. have) a very good collection and he (3. be) proud of it. He (4. specialize) in coins of English – speaking countries. Mr. Green (5. begin) (6. collect) stamps when he (7. be) sixteen years old. His parents (8. take)