单项选择题（共20小题，每题1.5分，共30分）
1．A modern city has been set up in______ was a wasteland ten years ago.
A. where B. which
C. that D. what
2．— How much did he charge you ___ the service? — Luckily, it's free ___ charge.
A. for ; of B. for ; for
C. of ; for D. of ; of
