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1) Have all telegrams been sent? - Not yet. Half of the telegrams was sent yesterday. The rest, except the three ones, have been typed. The latter are being typed now. They'll be typed in 20 minutes.
2) A lot of houses (buildings) were destroyed in Kiev during the war. Most of them have been restored, and a lot of new ones are being built now.
3) When the (a) journalist (newsman) came to Tashkent after the earthquake, a lot of schools and public facilities (municipal buildings) were being restored there. Currently, Tashkent is a city with wide and green streets, residential blocks, municipal buildings, and modern shops. They have been built over the last 20 years.
4) Are the negotiations (talks) being conducted? - According to the press, they are coming to the consclusion. But the agreement hasn't been reached yet.
5) This book is in great demand now.But if you want to buy it, go to the book-shop. It's being sold there. (It's on sale)
6) Don't come into the classroom. Student Petrov is being examined now. He has been examined for 20 minutes.
7) What's going on in the library? - New books are being discussed there now. They have been discussed for an hour.
8) The lecturer (tutor) asked the student to learn this rule by himself (on his own), as it (the rule) had already been explained. "You were inattentive, when this rule was being discussed", he said.

2.many hauses were ruined during the second World War many of them were reconstructed and many new hauses are build now.
5.This book is bestseller now but if you want to buy it go to bookshop/ IT is in send there.
6.Do not come in in the room/Student Petrov is exemined now.He had been exemining for 20 minutes.
7.What had happened tn the library? The new books are disscused there.They had been disscusing for an hour