一、单项填空（共15小题；每小题1分，满分15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。
1. --- Do you have _______QQ number?
--- No. Can you tell me how to get_______?
A. a; it B. the; it C. a; one D. /; one
2. --- Look! Lots of people there. What’s wrong?
--- An old lady was going across the road ________ a car hit her.
A. while B. if C. whether D. when
3. --- unusual music he is playing!
--- Yes, all of the students are losing themselves in it.
A. What B. What an C. How a D. How
