二．单项填空（共15小题；每小题1分，满分15分）
21) --- I hear that as many as 25 people were killed in the accident.
---Yes, __________news came as _________shock to me.
A. the; the B. the; a
C. a; the D. a; a
22) __________ the website of the Fire Department in your city, and you will learn a lot about firefighting.
A. Having searched B. To search
C. Searching D. Search
