The sales of private cars have increased() 40 percent in the past ten years.

科目名称：人文英语1

试卷号：23896

题型：词汇与结构(单选题)

题目：The sales of private cars have increased() 40 percent in the past ten years.

选项：A. with B. by C. on

需要1积分查看

答案：B. by