. ______ the ancient Egyptians built the pyramids puzzled people for centuries.
| A．Whether | B．What | C．How | D．Where |
In face of failure, it is important to ______ a good state of mind.
| A．keep up | B．keep on | C．keep out | D．keep off |
In the ten days _______ New Year's Day, revelers within the Fifth Ring Road ______ to set off firecrackers from 7 a.m. to midnight.
| A．following, are allowed | B．followed, allow |
| C．following, allowing | D．followed, have allowed |
—He is fluent in English because he once stayed in London。
—Really ?How long ____ there ?
| A．did he live | B．has he lived | C．had he lived | D．does he live |
___ Dad away ,Mum had to shoulder the burden of the family .
| A．As | B．With | C．For | D．Because |
You _____ pay too much attention to your handwriting ,as it is very important.
| A．mustn’t | B．needn’t | C．can’t | D．won’t |