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13. Заполните пропуски, употребляя глаголы в Present Perfect или Past Simple. Переведите предложения.
1.I … English since 1995. (to study)
2.We … English at school. (to study)
3.He … three hours ago and … yet. (to go out, not to return)
4.How many pages … you … yet? (to read)
5.I … home at 5 o’clock yesterday. (to come)
6.He … his work yet and is not ready to go with us. (not to finish)
7.From 1991 to 1998 he … as an economist. (to work)
8.I … busy all this week. (to be)
9.When he was an agronomist on the farm, he … twelve hours a day in spring and summer. ( to work)
10.Where … all the students …? (to go)
11.Last summer Jim and Jane … to the conference in Berlin together. (to travel)