Of the two brothers, Bill is ______ younger one, and he is a quiet boy, ______ that most adults like very much.

 —Shall I sit at this end of the boat or the other end? —If you keep still, you can sit at _____ end.

He is so young and short a man that I think he is   ________     but a professor of Northwest University.

Mum disliked ______ when I behaved badly in front of the guests.

I still remember how many years _____ was that I quarrelled with her for the first time.