Once we discover a mistake, we should not ________ it but correct it immediately, to create better conditions for economic development. [ ]

64. The price of the portable computers(手提电脑) is still sothat I can’t afford to buy one.

In our daily life, everyone fails every now and then.It is how you react that makes a ______.

．I have called the station and they told me the next train for Da Lian _____ at 3:10

We’d better go downstairs right now forlunch.—__________ They serve food 24 hours a day.