1. --- He is a very hard-working student．
---________．As far as I know, he often burns the midnight oil．
A．You can say that again B．Absolutely not
C．Heaven knows D．No way
2. Of the two brothers, Bill is _____ younger one, and he is a quiet boy, _____ that most adults like very much.
A. a; one B. a; the one C. the; one D. the ; the one
