题目内容：

用方框中所给单词的适当形式填空，使句子通顺，正确。每词限一次。

thin  twelve  cost  south  develop

1. Mr. Green lives on the __________ floor of the building.

2.After exercising for a few months, she is a little           than before.

3.How much does it           to fly to Shanghai from Fuzhou?

4.Many foreigners are surprised at the rapid _______________ of China.

5.It rained heavily in the           of Zhejiang Province last week.