试用买卖
参考答案：
又称为试验买卖，是指合同成立时出卖人将标的物交付给买受人试用，买受人在试用期间内决定是否购买的买卖。
—I am going to England for ______holiday next month.
—Have a good trip ! [ ]
A. a eight-day
B. a eight-days
C. an eight-days'
D. an eight-day
范围经济
