问题:
_____ the website of the Fire Department in your city, and you will learn a lot about firefighting.
[ ]
A. Search
B. To search
C. Searching
D. Having searched
_____ the website of the Fire Department in your city, and you will learn a lot about firefighting.
B. To search
C. Searching
D. Having searched
[ ]
A. Search B. To search
C. Searching
D. Having searched
参考答案: