标题: GWD26-q20 [打印本页] 作者: kingsonosgnik 时间: 2010-9-7 18:12 标题: GWD26-q20 20. GWD26-Q20 In 1981 children in the United States spent an averageof slightly less than two and a half hours a week doinghousehold chores; by 1997 they had spent nearly sixhours a week. A.chores; by 1997 they had spent nearly six hoursa week B. chores; by 1997 that figure had grown to nearlysix hours a week C. chores, whereas nearly six hours a week werespent in 1997 D. chores, compared with a figure of nearly six hours a weekin 1997 E. chores, that figure growing to nearly six hours a week in1997
能解释一下a b c 吗？ 答案选b作者: judydongxueni 时间: 2010-9-7 21:21
这个题目要用过去完成式，cde不对