3. Express the idea in one sentence using the Passive construction in Present or Past.Example: Lots of tourists visit London every day.London is visited by lots of tourists every day.1) Writers write books.2) In Great Britain they drive cars on the left.3) In all other countries they drive cars on the right.4) People speak English in many countries.5) well16) Leonardo da Vinci paintea the Mona Lisa.7) The Romans built the Colosseum.8) They staged Othello in the local theatre.​

1.The boiling point will be determined after the experiment begins in half an hour.
2.The substance was being dissolved in nitric acid when the professor came in.
3.By the end of the next experiment the volume of liquid will have been measured in a graduated cylinder.
4.The result of the reaction of sulphuric acid with potassium hasn't been obtained yet.
5.Many experiments were carried out by pharmaceutical students yesterday.
6.By the end of our practice many medicinal plants will have been collected at the botanical stations.
9.Pharmacy is defined as the science of recognizing, identifying, selecting, preparing and compounding substances.
10. Some preparations which were known to primitive men are known in a modified form.
11. It is known that morphine was isolated from opium by 1906.
12. He said that the room had been ventilated for two hours before the class began.
№7 и 8 дублируют №5 и 6.