-Mary, would you like to come to my birthday party? -_____.
| A．Of course, you could | B．Sure. Go ahead |
| C．Sorry, you may not | D．No, you mustn’t |
It is important to know about the cultural differences that________cause problems.
| A．must | B．dare |
| C．need | D．may |
When Premier Zhou Enlai was alive，he________work from morning until night every day，dealing with numerous affairs.
| A．would | B．could |
| C．must | D．might |
—May I tell this to my close friend?
—No，you________.Never let anybody else know about it.
| A．needn’t | B．shouldn’t |
| C．mustn’t | D．can’t |
—Why didn’t Alex attend the party yesterday evening?
—He________not have wanted to see me.
| A．should | B．might |
| C．could | D．would |
It has been announced recently that all the schools________not have the students attend school if the students have high temperatures.
| A．need | B．shall |
| C．could | D．ought to |