You ______ be hungry already — you had lunch only two hours ago!
| A．wouldn’t | B．can’t | C．mustn’t | D．needn’t |
Jade is the highest award in Chinese culture and medals are the most important prize in Olympics，so medals with jade is the perfect ______ to present the Olympics in Beijing.
| A．combination |
| B．cooperation |
| C．connection |
| D．composition |
Please ______ the traffic regulations.
| A．observe | B．take | C．see | D．look |
Every boy and every girl ______ that each day and each hour brings ______ duty.
| A．know；their | B．knows；their | C．knows；its | D．know；its |
—What do you think of the meal we have just had?
—It is well worth ______ is changed for it.
| A．that | B．what | C．which | D．how many |
It was foolish of him to ______ his notes during that important test，and as a result，he got punished.
| A．stick to | B．refer to | C．keep to | D．point to |