单项选择题
If you have someone accompanying you, ten miles （） a long way to walk.
A.is B.aren’t C.isn’t D.are
单项选择题 This kind of cloth is durable, cheap and （）.
单项选择题 Alex works harder than （） in the office.
单项选择题 We believe that sales will increase soon; （）, production costs will be going up also.
