Заполнить пропуски правильной формой глагола be или have.…

Заполнить пропуски правильной формой глагола be или have. 1.Their son … a businessman.2.He … a cassette.3.These boy … students.4.Much time… often spend 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 the USA.13.He … already read this book.13.The letters … already been written by her.14.By 9 o'clock yesterday i … already sent all the letters.15.She … just met her husband.16.They … not translated this text yet.17.The sentences … already written by them.18.We … students of the college.19.There … no magazines in the table.20.There … an armchair in front of the TV set.