The science of computer, _____rapid progress has been made in recent years, is the most important of all science.
---I beg your pardon! ---Oh, you to me carefully. (just now)
Where on earth have you been? We you back much earlier.
He works in a factory now, but he on a farm for 20 years.
Glad to see you back. How long in Russia?
---Have you decided already? ---Yes, I at once.