题目内容：

the math book is on the dresser.the ruler is under the bed.改成一般疑问句,否定句,肯否的回答.

优质解答

Is the math book on the dresser?Yes,it is.No,it isn't.The math book is not on the dresser.The ruler isn't under the bed.Is the ruler under the bed?Yes,it is.No,it isn't.