Написати 8 речень с Гертрудием

1. My friend gave up smoking a few years ago.2. Taking a cold shower in the morning is very useful.3.I had no hope of getting the letter before the end of the week.4. The children went to bed without seeing the film.5. We know of Lebedev's having made the first synthetic rubber in the world.6. Не finished working.7.Smoking is bad for health8.Reading gives you knowledge.