—What’s the central idea of the passage，Bob?
—Sorry，I can’t make________of it.It’s beyond my ability.
| A．judgement | B．understanding |
| C．idea | D．sense |
“ ______ I hand in the paper this week?” “ No, you ______. You _____ hand it in next week.
| A．Must; needn’t; may | B．will; mustn’t; ought to |
| C．Shall; can’t; have to | D．Should; didn’t have to; can |
“ _____ 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 |