39．I think you should have let him finish his speech, ________you disagreed with him.
| A．whatever | B．no matter what | C．wherever | D．however much |
You_____seeher,butImust.
| A．haven’t | B．cannot | C．mustn’t | D．needn’t |
Thebushadleft,sowe_____walkhome.
| A．haveto | B．ought | C．hadto | D．must |
Thedoorisstillclosed.He_____thekey.
| A．musthavelost | B．mustlose | C．needhavelost | D．canlost |
Mary_____beinLondonbecauseIsawherintownjustnow.
| A．mustn’t | B．isn’tableto | C．maynot | D．cannot |
Whenhewasold,MrSmith_____sitforhourswithoutsayinganything.
| A．would | B．should | C．must | D．will |