写出下列副词的比较级和最高级

Water pollution is one of __________ in our country.

Of all the students in our class, Jack is _________.

This is        book in our library.

I think the song in the film "Titanic" is    one of all the movie songs.

Mr Smith thought the Century Park was the second ___ in Shanghai

—How are you today, Mike?

—I'm      now. I don't think this medicine is good for me.

Dave has    friends here, so he often stays at home by himself and feels lonely.

—Your son is much        now.

—Yes. The jeans he wore last year are already too short for him.

Mrs. Zhang is one of    teachers in our school. We all like her.

Mo Yan is one of _____ writers in the world.

The movie covers all of Chinese history. It is    worth seeing again.

I fell off the bike on my way to school. _______,I wasn't hurt.

I ______ ride a bike to school. But this morning, I walked to school.

—I lost my ticket,but______the travel agent gave me another one.

—      did you work out the problem in such a short time?

—With Mr. Li's help.