—What do you think of the film Avatar?—It________be better.I even want to see it twice.

We are now in the age of great changes. Everything sometimes ________ before it is felt.

(2013·郑州高中毕业班第一次质量预测)—Did you enjoy meeting your old schoolmates at the party last week?—Yes, I did. We ________ each other since we graduated from college.

 —Why didn’t you come to the cinema with us last Saturday? —Oh，sorry．But I        the film．

As a leading producer of greenhouse gases, China      the United States as the largest consumers of energy．