根据句意和所给的中文提示，写出句子中的单例。

1．China is one of the oldest         （文明）in the world．

2．I'm afraid your pronunciation is not good．Try to speak more and         （改进）it．

3．Ms. Yang is         （耐心的）with us．We all like her．

4．Several other provinces also suffered a great loss         （除……之外）Sichuan．

5．Tony got the first in the English speech         （竞赛）．