标题: 求助GWD24-20，没搞明白啊╮(╯_╰)╭ [打印本页] 作者: crystalhuang 时间: 2010-12-23 20:19 标题: 求助GWD24-20，没搞明白啊╮(╯_╰)╭ Q 20: According to a 1996 survey by the National Association of College and University Business Officers, more than three times as many independent institutions of higher education charge tuition and fees of under $8,000 a year than those that charge over $16,000.
A. than those that charge B. than are charging C. than to charge D. as charge E. as those charging 为什么选E 我觉得应该是charge啊，为什么是ing形式，能不能给我解释下？？········作者: AlohaDJ 时间: 2010-12-23 21:03
(1) as many...as