Krish: Construction Techniques, Geology and Mechanics
John: Which do you like best?
Krish: Sir, it is Mechanics that interests me the most.
John: Not all students do their lessons carefully these days.
Krish: Well, I do mine carefully.
Robert: Have you ever been to Australia.
Tim: No I have never been there.
Robert: Did your parents stay in Malaya for very long?
Tim: Yes, they stayed there for two years.