—Look! There is a big river. Let’s swim in it!
—No, I think it’s _________ dangerous.

—        is the history of Tsinghua University? (2011年佛山)
— 100 years.
A. How soon              B. How long             C. How far

I won’t pass the exam ______I work hard..

A smile costs nothing, but gives so ______.

Speak aloud, please! I can _____ hear you.
A. almost                     B. hardly                     C. usually

—       do you speak English so well?　　
—Because I practice it with my partner every day.　　
A. Why     B. When   C. Who　　

Jack is good at drawing. I think no one draws __--

--- ______ do you play football?
　 --- Once a week.

Li Kai jumped    in the long jump. He won the game.
A. longest             B. farthest            C. highest

—Do you think yesterday’s math problem was difficult?
—Yes. I could ________ work it out.