is Ann’s bike?It’s behind the tree.A. WhereB. WhatC. WhoseD. Who

问题补充：

--- is Ann’s bike?

--- It’s behind the tree.

A. Where

B. What

C. Whose

D. Who

答案：

(答案→)A. Where

B. What

C. Whose

D. Who

解析：A. Where 在哪里B. What什么 C. Whose谁的D. Who谁；句意：安的自行车在哪里？它在树的后面。故选A.