С. раскройте скобки, употребляя глаголы в passive voice. 1. she (to listen) to by everybody yesterday. 2. papers after the conferences (to publish) often. 3. the results of his ten-year work (to refer to) by many scientists by last month. 4. his scientific work in the field of chemistry (to take notice of) next lecture. 5. his writings (to know) all over the world very often.
2) are published
3) had been referred to
4) will be taken
5) is known