3. Раскройте скобки, употребляя причастие в подходящей форме. 1. Scientists are

3. Раскройте скобки, употребляя причастие в подходящей форме. 1. Scientists are experimenting with a system (to allow) drivers to see better after dark. 2. The investigation (to carry out) by the students is very interesting. 3. New technologies reduce the number of workers (to need). 4. The project (to discuss) by the engineers has numerous advantages. 5. The professor (to deliver) a lecture on the use of new engines has a lot of papers in the field of automotive engineering. 6. (to wait) in the hall, he thought over the problem he was planning to discuss with our lecturer.