）—Are the keys yellow?—.A Yes it is B No they aren’t C Yes she is

问题补充：

）—Are the keys yellow?

—.

A、Yes, it is B、No, they aren’t C、Yes, she is

答案：

解析：it是人称代词它，指代上文提到的单数事物；they是他们；she她，指女性；上文句子主语为复数，故下文代词应用复数形式，谓语动词为are，故选B。