— bike is this?—I think it’s Sally’s.A. What B. Whose C. Where

问题补充：

— bike is this?

—I think it’s Sally’s.

A. What B. Whose C. Where

答案：

解析：句意：这是谁的自行车？我想是赛丽的。Bike前面缺少一个定语，故选B。