A recent survey shows that the number of children who       from the countryside with their parents       ________nearly 320,000 in Beijing.

— How much is this type of cars?— It’s not dear. 11,000 dollars           enough．

Jack with his two kids           to the beach for vacation every year.

Three fourths of the ________ in the country have run out.

----- What does Canada export?---- A large quantity of wheat_____ sent away.