Fill in the blanks with the correct forms of the verbs be or have: 1. their son … a businessman. 2. he … a disk. 3. these boys … students. 4. much time … often spent by my relatives together. 5. my friends will … introduced to my parents by me tomorrow. 6. the museum … visited by them last sunday. 7. the examinations … seldom passed by him well. 8. the library … rarely visited by the students last year. 9. the cake was … cooked by my mother all evening yesterday. 10. the man … waiting for her at the moment. 11. she … finished her work when we came in. 12. i … never been to the usa. 13. he … already read this book. 14. she … just met her husband. 15. they … not translated this text yet.