-What’s the matter?-Just in front of the bus an injured man, all covered with blood.
.Several years had passed ______ I finally realized the true value of friendship.
.All passengers ______, please fasten your seat belts and remain seated ______ the plane is landing.
.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.
.______ World Exposition in 2010 is the first registered World Exposition in ______ developing country.
.It’s a mistake to think of Chongqing only ______ its tourist attractions.