his vacation was pretty good改为一般疑问句和否定句
问题描述：
his vacation was pretty good改为一般疑问句和否定句
答
Was his vacation good?
His vacation was not good.
答
Did his vacation pretty good.......................疑问
his vacation wasn't pretty good...................否定
答
was his vacation pretty good?一般疑问句
his vacation was not pretty good否定句