Your city looks beautiful.—Yes. Lots of trees and grass ________ last year.

Look! The boys _______ football onthe playground.

Why not buy John a toy car for his birthday— __________. He is crazy about cars.

下列交际用语使用得体的一句是（ ）

ere is less and less coal and oil,scientists are exploring new ways of making use of ______ energy, such assunlight, wind and water for power and fuel