摘要
Ⅰ.单项选择1.——Hestillhasn'tfinishedtheworkaftersuchalongtime.——He____veryhard.A.mustn'thaveworkedB.canhaveworkedC.can'thaveworkedD.shouldn'thaveworked2.——It'salreadyseveno'clock.MissLiuhasn'tturnedupyet.——She____thebus.
出版日期
2002年05月15日(中国期刊网平台首次上网日期,不代表论文的发表时间)