Jade is the highest award in Chinese culture and medals are the most important prize in Olympics, so medals with jade is the perfect _________ to present the Olympics in Beijing.

The first question was difficult , but ___ were quite easy.

There seems to be a __________ that the plan should be given up.

Japan has to employ an increasing number of overseas workers because there is no easy solution to its labor _____.

Many women work in big companies，but in the boardrooms of most big companies, women are in the _______.