16. _____ good time we had at the park yesterday afternoon!
A. What B. How C. What a D. How a
17. — Look! An old m an is in the middle of the street. It’s too dangerous.
— Let’s help him go _____ the street.
A. along B. over C. cross D. across
18. — How can I get some _____ about Marco Polo?
— Why not search the Internet?
A. fact B. message C. trouble D. information
