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Раскройте скобки и поставьте глагол в нужном времени и залоге; переведите предложения на язык: 1) russian scientists (to make) many important discoveries last century. 2) their laboratory (to visit) just by a group of american doctors. 3) when i (to cross) the street i (to meet) my friend. 4) many new books by russian writes (to translate) into english every year. 5) ann (to send) just two letters to her parents. 6) a new specialist (to send) to the chemical laboratory next month. 7) our lectures (to begin) at 9 o’clock. 8) my friend (to graduate from) the institute this year. 9) they (to show) already a new film. 10) don’t open the window. it (to rain) hard. 11) they (to finish their experiment by 10 o’clock. 12) the workers (to build) a new stadium by the end of last month.
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