Could you tell us ________ happens when one student in class expresses a personal opinion ________ maybe offends other students?

_____ is known to us all that the 2012 Olympic Games will take place in London．

---Hi, Torry, can I use your computer for a while this afternoon?
----Sorry.________.

At the evening party the host said ______ was able to solve the riddle could get a nice present as a reward.

____ he referred to in his article was unknown to the general reader.

_________ climber gets to the top first will get a $5,000 prize.   

_________ is known to us all is that the 2012 Olympic Games will take place in London.

The saying “    Brother is smoking is not a cigarette(香烟), but loneliness.” is popular on the Internet.

_______ she came for school late is that she missed the early bus.

______ will win in the race?