Weshouldh的精選

問題詳情：—Guys,Iwasreallywornout!Ican'twalkanyfurther!—Weshouldhavearest.We________thecaveawholeday.A.exploring B.areexploring  C.havebeenexploring  D.explore【回答】C知識點：動詞時態與語態題型：選...