— my baseball? — It’s under the chair.A. WhereB. Where’sC. What’sD. Where are

问题补充：

— my baseball?

— It’s under the chair.

A. Where

B. Where’s

C. What’s

D. Where are

答案：

A. Where

(答案→)B. Where’s

C. What’s

D. Where are

解析：本题回答语表示的是地点，本题的主语为单数，故用where is，故本题选B。