Is there a clock in your classroom?要回答和理由

Is there a clock in your classroom?要回答和理由
Is there a clock in your classroom?要回答和理由

Is there a clock in your classroom?要回答和理由
Yes,there is.(because there one is indeed.)
No,there isn't.(because there isn't any indeed.)
Sorry,I cannot tell you.(because I don't know.)