As _____ writer, he was _____ complete failure.
| A．a, a | B．a, the |
| C．不填，不填 | D．a, 不填 |
“ _____ you play baseball?” “ No, I _______. “
| A．Can; may | B．Can’t; can’t | C．May; can’t | D．can; can |
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 |