1£®Ancient China was a place where states were often at war with each other.

2£®October 1,1949 was the day when the People's Republic of China was founded.

3£®I don't know the reason why she looks unhappy today.

4£®The man who is shaking hands with my father is a policeman.

5£®This is the scientist whose name is known all over the country.

6£®Guilin is a city which/that has a history of 2,000 years.

7£®That is all that I want to say.

8£®We jumped with joy at the news, which was natural.

9£®I hope to get such a dictionary as he is using.

10£®He gave his mother a colour TV set for her birthday, which pleased her a lot.

11£®This is the teacher from whom we've learnt a lot.