—How do you think he managed to improve his English in such a short time?
—______ four hours on it every day．

This is the best way I could think of ______________ into the dangerous area.

Mr Smith, _________ of the ___________speech, started to read a novel.

There is nothing to get________ about for it is common in our daily life.

Football is played in more than 80 countries,        it the most popular sport around the world.

The boys,     with this frightening person, lost their tongues.

We should go to school by bus or underground rather than by car       global warming.

The teaching building         in the big earthquake was our chemistry lab.

He looks forward with great interest         the 2010 Shanghai Expo in the summer holiday.

I mean ________ aboard and nothing is going to stop me, though that means _______ my parents for a long time.