Marcia skated()in last year's marathon.A.for one hour B.for one hour ago C.since one hour ago
问题描述:
Marcia skated()in last year's marathon.A.for one hour B.for one hour ago C.since one hour ago
答
选择A,表示Marcia在去年的马拉松赛跑中滑雪花了一个小时
而不选择B是没有这个说法,要么是one hour ago
至于Csince一般都是用完成时