---who______it be that is knocking at the door?
---It_______be Father, but I’m not sure.
| A．can, must | B．can, may | C．must, can | D．may, must |
Having afternoon tea is an English ______.
| A．tradition | B．menu |
| C．drink | D．festival |
My cousin went abroad at_____ age of eighteen.
| A．a | B．an | C．the | D．不填 |
If you _____ smoke, please go outside.
| A．can | B．may | C．must | D．might |
In the traditional Chinese calendar, each year a name of 12 kinds of animal.
| A．gives | B．is given |
| C．has given | D．has been given |
－I looked after a group of fifteen French children, you know.
－That easy
| A．mustn’t be | B．mustn’t have been |
| C．can’t have been | D．can’t be |