1. поставьте следующее предложение в past indefinite и future indefinite, добавляя, где необходимо, слова last / next week, last / next year, tomorrow, yesterday и т.д. -where …you? – i … in the kitchen. -what … the weather forecast for tomorrow? 2 . определите время предложений. 1) they usually spend their holidays in the caucasus. 2) they are swimming in the river. 3) he had already built this plant by the end of 1997. 4) the telephone has been ringing for five minutes. 5) my sister will graduate from the university next year. 3 . поставьте следующее предложение в past indefinite и future indefinite, добавляя, где необходимо, слова last / next week, last / next year, tomorrow, yesterday и т.д. i go to the institute every day.

1
-Where were you last? – I was in the kitchen. -Where will you be tomorrow? – I’ll be in the kitchen.   -What will be the weather forecast for tomorrow? -What was the weather forecast for yesterday?    
2
1) They usually spend their holidays in the Caucasus. (present indefinite)  2) They are swimming in the river.(present continious)  3) He had already built this plant by the end of 1997.(present perfect)  4) The telephone has been ringing for five minutes.(present perfect continious)  5) My sister will graduate from the University next year.(future indefinite)    
3
I go to the Institute every day.   I went to the Institute every day. I will go to the Institute next year.