A student will be immediately punished if he is found     in the exam. 

The problem he referred to _____ difficult, but is isn’t at all.

---What do you thin of the book?---Oh, excellent. It’s worth _______ a second time.

----You _______ part in the party in time. ----Sorry I was delayed by the accident.

She explained it again to make herself _______ by the audiences.

We are kept ______ of what is happening in the world by reading newspapers and watching television .

Underground railway is being built in Shenyang. We are sure to take the subway to ______ in the city in no time.

The design of this architecture has to _____ all ages and social groups, which should be made clear to whoever is to design it. 

Finally the thief had to       he had stolen the valuable necklace

I am looking forward to _______ you again next month.

Great attention must be devoted ________ agriculture(农业), especially in China, ______ population is the largest in the world.

It remains ______ whether Liu Xiang will take part in the next Olympics.

I don’t think the problem you referred to is worth______.

_________in the IT company, David decided to say goodbye and start his own business.

Great attention must be paid ______ education, especially in the poor area.

They prefer to spend time _____ rather than _____ in the street.

The woman tried to _______ his husband to give up smoking, but she failed.

He opened the envelop, had it_____ and began to read it.

When ___our culture with those of other countries, we find ours is quite different.

Many of the children are so accustomed to ______ that they react violently when they hear something different.