--- How long ____ was this? --- It’s been nearly six years now.

In order to keep fit，you will take exercise_________ and eat healthily．

Although China has developed its economy greatly, its per capital GDP is still         one-tenth of the United States.

—Since you like the fur coat so much， why not buy it?—Well， I can’t afford ______ coat. 

Her mother posted her some books and a lot of money____________ .