Исправить ошибки в предложениях. 1) Yuri Dolgoruki founded Moscow in 1147. 2) Have the letters being posted? 3) Nylon used to make things. 4) A new school will built in our street next year
1) Yuri Dolgoruki founded Moscow in 1147. OK
2) Have the letters been posted?
3) Nylon is used to make things.
4) A new school will be built in our street next year