— Can you see what is written on that board?
— Yes. It _______ “CAUTION: WET FLOOR”.
| A．reads | B．is read | C．writes | D．is written |
My mother is a great cook and we ________ never get enough of her cookies.
| A．may | B．need |
| C．should | D．can |
—Could I have a word with you，mum?
—Oh，dear，if you ________.
| A．can | B．must |
| C．may | D．should |
It is important to know about the cultural differences that ________ cause problems.
| A．must | B．dare |
| C．may | D．shall |
—Did you go to the fashion show last week?
—I ________，but I was fully occupied the whole week.
| A．must go | B．must have gone |
| C．would go | D．would have gone |
I’m as busy as a bee；________ you bother me with so many questions now?
| A．may | B．must |
| C．can | D．shall |