1. Has George (come)? – Yes, he (has).– When did he (come)? – He (came) 10 minutes
ago. 2. Don't ring me up at 3. My father usually (has a rest) after
dinner. 4. My friend (has been waiting) for you since two o'clock. Why didn't you (
come) in time? 5. How long have you (been translating) this article and how much
of it have you (translated)? 6. I (had returned) from the library by three o'clock
yesterday. 7. Don't come to me at 5 o'clock today. I (will be having) an English
lesson. 8. When he began to teach at the Institute, students in his
group had already been studying) English for two years. 9. My friend (studies) at
the library every day. Last Sunday we (went) to the library together. We
(read) books on Russian literature, ( learnt) English and (translated)
some newspaper articles. 10. Have you ever been to the Urals? – Yes, I have. I
(was) there last year. Borisov (will be) on business there next year. 11. I
(would have written) this book in a year if I (had had) more free time. 12. By the first
of September she (will have worked) here for 20 years. 13. Had you (been learning) English
before you entered the University? 14. Rose and Jim (met) for the
first time when they (were studying) at the university and they (have) already known
each other for seven years. 15. I'm sorry you (have decided) to leave the
company. I (will miss) you when you (are gone).