—What color Mary’s shoes?—black.Aare; They’re B．is; They’re C．is; It is

问题补充：

—What color Mary’s shoes?

—black.

A．are; They’re B．is; They’re C．is; It is

答案：

解析：shoes是复数，故其人称代词要用they，其相对应的系动词也要用复数形式。