改写句子 A:He paid the boy 10 dollars for washing ten windows, and most of them had

改写句子

A：He paid the boy 10 dollars for washing ten windows, and most of them had not been cleaned for a year．

B：He paid the boy 10 dollars for washing ten windows, ________　________ had not been cleaned for a year．

试题答案

答案：most,of,which