Unfortunately, it was in Yushu County, ______ a 7.1-magnitude earthquake happened on April 14, 2010, ______ a large number of students were buried inside damaged schools.

All passengers ______, please fasten your seat belts and remain seated ______ the plane is landing.

Several years had passed ______ I finally realized the true value of friendship.

Medical ______ shows that men are more likely to have heart attacks than women.

About 71% of the earth’s surface ______ covered with water, but 20% of the world population ______ have access to safe drinking water.

 When I knew Mary made every effort ______ the homeless, I could not but ______ her.

The advertisement says the vacuum cleaner (吸尘器) can ______ everything from the floor. Do you believe it?

— ______?

— In a nutshell, the movie was incredibly dull and only the starring role Johnny Depp attracted me a lot.

 Tourism is important ______ Oxford and Grenoble, and they are both close ______ some of the most beautiful countryside in the region.

— How is the result, doctor?

— Well, your health is ______ good, but you do have a few minor problems.