(What )size shirt and trousers do you wear?And(what )color do you like?
(Who )is the young man in blue over there?Is he a teacher?
(When ) did the Europeans first discover America?In (which ) century?
(What ) do they think about the streets and aquares in the United States?
( Why ) do you like the weather here in England in autumn?
( Whose ) office workers are these in the steel piant in Chicago?