请改正句子
He used to writing about the Olympic Games more than 2000 years ago．
How many competitors from how many countries competed the Olympic Games in the 27th Summer Olympic Games?
短文改错
English is now an international language．It used at many
1．________
international meetings．We would speak English when we
2．________
do business with foreigners．But how can we learn English well?
3．________
Most important of all, we should interested in it．
4．________
Then we ought go out to learn, to speak, to read and
5．________
to write．Furthermore, we should practise use it whenever possible．In
6．________
class we should answer questions actively．After the class
7．________
we should talk with our classmates with it．
8．________
If we come across foreigners, we should learn them．
9．________
If we keep on practising like that, we will be sure to master
the English language at the end．
10．________
单句改错
It has been pointed out, grammar is not a set of dead words．
This is the most beautiful place which I have ever visited．
It was such a heavy stone that no one can lift．
Everything which will be needed is ready．
Do you know the reason for he didn’t come?
The result of the experiment was very good, that we hadn’t expected．
This is all what I know about the accident．