1.They (to discuss) the questions of conservation of natural and cultural heritage in this region from 10 a.m. to 2 p.m. yesterday.
2. She (to be) busy the whole day tomorrow.
3.The number of endangered species of animals (to grow) from year to year.
4 you ever (to hear) about ‘fly-tipping’?
5. We (to plan) the conference on the environmental issues at the moment.
6. A new brochure about this Nature Reserve (already, to publish).
7. She used to live in Britain but now she (to live) in Ukraine.
8. I won't undo what I (to do already)!
9. Sorry to keep you waiting. I (not, to be)long.
10. According to my survey, ten pupils in our class (to trade) items of different kinds with other people in our community.
11. It (to get) colder and colder.
12. In 50 years’ time, most people (probably ride) bicycles to work.
13. My family (to use) only compact fluorescent bulbs.
14 .Look! They (to air-dry) their clothes. Thus, they can save some electricity. What a great example to follow!