. I still remember the day ________ we first met on.
Until the noise of the bus , we were able to hear the program again.
The building is carefully designed so that everyone can leave the building safely if an accident.
Nowadays many parents from the countryside cannot afford to educate their children, because the schoolare too high.
We can’tagainst other countries in trade if we don’t develop our national economy(经济).
The huge statue(雕像) of the former leader was pulled down, and it lay on the ground _______ .