Спишіть, вибираючи правильну часову форму.
1. Atomic energy (will have been supplying / supplied) power for lighting cities for many future years to come.
2. During many years Ukrainian scientists and engineers (have been making / made) big advances in science and technique.
3. This student (has been studying / studies) at our University since 2006.
4. The best architects of Sumy (had been discussing / have discussed) the plans for the new multi-storey buildings and shops several times before their construction.
5. Petro Orel who (had been taking / took) part in these constructions entered our University four years ago.
6. Since December 1990 our country (has been changing / changed) its appearance greatly.
7. By the first of September this year the second year students (will have been studying / will study) here for two years.
8. My friends (will have been learning / will learn) English for two years more before they pass their state examination.
9. The Ukrainians (have been raising / have raised) standards of their life all these years.
10. We have heard the agronomists (have been working / had worked) on the development of new sorts of winter wheat since the end of the twentieth century.