21. 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
22. ------So you gave her your phone?
------_____, she said she’d return it to me when she could afford her own.
A. My pleasure B. Not exactly C. No doubt D. All right
