第二部分 知识运用（共两节，满分20分）
第一节 单项填空（10小题；每小题1分，满分10分）
从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。
21. We are invited to a party _________in our club next Friday.
A. to be held B. held C. being held D. holding
22. It is reported that the police will soon ____ the case of two missing children.
A. look upon B. look after C. look into D. look out
