The number of the people who _______ cars ______ increasing in China.

Mary is the only one of the girls who _____ often late for school.

We collected a lot of books to get the necessary information but only half _________helpful, so we failed to finish the work. 

 The farmers eat only 20 percent of fruits they grow, the rest of which _____ sold to the supermarket.

________ of the land in that district _______ covered with trees and grass.