Many people complain that some of KFCs in China_______the price of a hamburger by oneYuan.

She is often langhed at _____ her classmates because of her laziness. [ ]

Rather than _________ on a crowded bus, he always prefers ________ a bicycle.

You get a point _______ you answer a question correctly. Which is WRONG?

What do you usually do in your free time?—— I enjoy reading in the library ________ has many good books.