Open the brackets and use the correct form. 1.if he had come to our house yesterday he (meet) his friend. 2. your friend (live) in siberia for five years before he moved to the far east.

1. if he had come to our house yesterday, he would meet his friend.

2. your friend had been living in siberia for five years before he moved to the far east.

1. if he had come to our house yesterday, he would meet his friend.

2. your friend lived in siberia for five years before he moved to the far east.

1. with whom did you discuss, 2. i have seen. 3. e entered, i saw, my mother was standing, cutting, she was cooking. 4. i heard, i ran, saw, a child was lying, crying, what has happened, why are you crying, have you hurt. 5. they went. 6. they have been. 7. he came, had, read, began. 8. when did your friend return, she returned, did you go, i didn't, i was. 9. has your brother returned, he came. 10. have you been, when were you, i was. 11. where is your brother, he has just come, he is taking. 12. i saw, i understood, he was working, he was writing, did not notice. 13. i came, the children were running and singing, we have learnt. 14. the young man entered, she looked, what do you want, she said, why have you come. 15. it was raining, i left, i returned, put, started. 16. are you working, i am preparing. 17. that is, it is, i've just taken. 18. where did you learn. 19. have they already thought, have they bought, mark has just ordered, he has mentioned, he hasn't ordered, he has thought, the shop has charged. 20. why are you shivering, i am shivering, i am. 21. i have sprained. 22. a world-famous violinist is playing. 23. the children were playing.

1. why were you late this morning? the traffic was bad. 2. was your exam difficult? no, it was easy. 3. where did you friend go last week? he went home. 4. why were you tired yesterday? because of lessons. 5. was english easier for you than physics at school? yes, it was. 6. was there more free time last year than now? yes, i think so. 7. were there many friends at school? no, not many. 8. was it easier  to study at school? yes, right. 9. is chemistry / as difficult as mathematics at school? no, not for me. 10. what is the most  difficult subject for you at school? geometry, i think.