Помогите плиз! Заполните пропуски, употребляя глаголы в Present Perfect или Past Simple....

Question

Помогите плиз!
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)
103
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)

Answer 1

I have studyed since 1995 2) we have study English at school 3) he has gone out and has not returned hey 4) how many pages have you read yet? 5) I have come at 5 oclock yesterday 6) he has not finished his work yet and is not ready to go with us 7) from 1991 to 1998 he has worked as am economist 8) I was busy all this week 9) where do all the students go? 11) last summer jim and jane have travelled to the conference in berlin together.