例：It is generally considered unwise to give a child ________ he or she wants.
A．however B．whatever C．whichever D．whenever
答案是B。
21．—Thank you for joining in our conversation tonight．
— _______ .
A．It’s my duty B. It’s all right C．It’s my pleasure D．It’s nice to say so
22．How about taking ______ short break? I want to make _______ call．
A．．the；a B．a；the C．the；the D．a；a
