The Beijing Olympic Games has been the biggest ________ Games in the world.

 When it comes to the civil war in Syria, the US government’s attitude towards it has experienced a(n)_______ change , which may have a positive effect on Syria present situation.

As we know, no matter how        a man is, if he doesn’t learn, he knows nothing.

To their great relief, the lost child went back home, ______, after an absence of two weeks.

It is __________ to spend money on preventing illnesses by promoting healthy living rather than spending on trying to make people ___________ after they are ill.