After the war, the people in that small country were working hard to __________ their country back to life.

The price of gold has jumped to______ new all-timehigh as debt worries in the US and ______ Europe continue to trouble the world.

Engines are to machines ____ hearts are to animals.

It is important for us___________ Chinese history.

下列各句中，没有语病的一句是（ ）