Раскрыть скобки используя пассивный и активный залог. 1.lenin's centenary (to celebrate) by all prpgressive humanity in 1970/ 2.we (to finish) our experiment in a week. 3.the delegatoin of foreign workers(to meet) at the station yesterday. 4.young trees (to plant)last autumn. 5.this question not (to discuss) at the conference. 6/i (answer) my brother's letter last week. 7.pushkin and lervontov (to lieve) in the 19 centuary. 8.people (to gight) for peace. 9.peace (to fight) fot by all people all over the world. 10.heat and light (to give) to us by the sun. 11.i (use) filk songs in my composition. 12. the letter (sent) eysterday)? 13.chemically pure water never (to meet) winh in everyday life. 14.the production of our industry( to increase) from year to year. 15.not much attention (to pay) to the living conditions.