填写单词：根据句子意思，在空格中填写适当的单词，使句子完整、正确。

1. Mary was born in 1994. So she is _________ years old now.

2. Yao Ming is one of the most famous _________ players in NBA.

3. There are twelve ________ in a year.

4. I hope my dream of university will come _________ soon.

5. No one taught him English. He learnt it by _________.

6. The heavy earthquake _________ in Wenchuan on May 12th last year.

7. Would you mind __________ the window? It's raining outside.

8. It's ___________ for the teenagers to swim in the river in summer.