Recently the newspapers have reported several __________ of the coal mines happening in different provinces in China and the government has taken effective measures to stop such things.

The winner of the Nobel Prize in Literature 2012, Mo Yan , said he did not have high      for winning． Actually, he thought he only had a slim chance to win．

When a space shuttle has accomplished its _____, it can be ready for another trip in about two weeks.

Hiking by oneself can be fun and good for health. It may also be good for      building.

English-born Paul made_____across the globe after he correctly forecast how Germany would fare(进展) in seven matches in the World Cup.