26)Tom____betterthantoaskDickforhelp. A)shallknow B)shouldn'tknow C)hasknown D)shouldhaveknown 27)You____yourtoothpulledoutbeforeitr otcompletely. A)hadbettergot B)hadtogetbetter C)hadbettertoget D)hadbetterget 28)Whenwegottothecinema,thefilmhasn'tstartedyet,sowe____. A)needn'thurry B)didn'tneedhurry C)needn'ttohurry D)needn'thavehurried 29)Itwasreallyverydangerous;you____himseriously. A)mighthaveinjured B)couldinjure C)shouldhaveinjured D)mustinjure 30)Ashehadheartattack,hewastoldthathe____continuethework. A)needn't B)maynot C)mustn't D)can't 答案：DDDAC
