----Are you sure it’s going to snow this weekend? ----_____.
| A．I don’t think | B．I think not so |
| C．I don’t think about it | D．I don’t think so |
It ________ be the postman at the door.It's only six o'clock.
| A．mustn't | B．can't | C．won't | D．needn't |
—________it be Tom that stole the manager's mobile phone?
—No.As far as I know, Tom is very honest.
| A．May | B．Can | C．Must | D．Should |
—How's your new babysitter?
—We ________ ask for a better one.All our kids love her so much.(2011·浙江)
| A．should | B．might | C．mustn't | D．couldn't |
—I don't really like James.Why did you invite him?
—Don't worry.He ________ come.He said he wasn't certain what his plans were.(2011·北京)
| A．must not | B．need not |
| C．would not | D．might not |
—Where will you start your work after graduation?
—Mmm, it's not been decided yet.I________continue my study for a higher degree.
| A．need | B．must | C．would | D．might |