Of the two brothers, Bill is ___ younger one, and he is ____ quiet boy, one that most adults like very much.
______ to their own work, most of the parents spend little time with their children.
What a pity! I ______ in Hainan two more days, but something urgent needed to be dealt with back home.
Tom, Jack and Rose were named as assistant professors. Believe it or not, ______ three of them were of ______ age.
--- Whom shall I give the document? --- To ______ is in the office. However, ______ to require a written paper for it.
______ his age, he was considered ______ well in the play.