—Do you know sound travels very fast?　一Yes. But light travels _________ sound. 

 —If there are _____ people driving, there will be ____ air pollution.— Yes , the air around us will be fresher and cleaner.

— Dear students, please read every word carefully. The more 　　　 you are, the　　　 mistakes you’ll make. — Thanks, Mr. Lee. We can do it well. 

.Of the two coats, she ’d like to choose the ____one to save money for a book.

 The weather in Beijing in summer is ___than that in Shanghai. They are different.

 He doesn’t do his homework _________, though he has ______________.

—How did you lose the soccer match?—We had _______ players. They had eleven while we had only nine!

—What do you think of the film So Young directed by Zhao Wei?—Wonderful. I think it’s _____than the other films about youth in recent years.

If there are     trees, the air in our city will be      cleaner.

There isn’t an airport near where I live. The _______ one is about 90 miles away.

Chiang Mai (清迈) has been one of            tourist places for Chinese since the movie Lost in Thailand (《泰囧》) was shown.

Lanzhou is the only capital city that the Yellow River, the second ________ river in China, passes through.。

-What do you think of the traffic in our city?-lt's    than it used to be, but there's still a long way to go.

More and more people have a low-C life and the air is getting much    than a few years ago.

Debbie is growing fast. She is even____________  than her mother.

I am good at math, but his English is ________ than mine.

It’s much _________ to have a small lovely room than a big cold one.

At the Beijing Olympics, Bolt broke the 100-meter and 200-records and became the _____man in the world.

I know this plan is far from perfect, but I just can’t think of           one.

My grandpa told a good story, but I told a ______ one.