三、语法填空
阅读下面短文，在空白处填入一个适当的词，或填入括号中所给单词的正确形式。
Long long ago, the snake and the frog were friends. At that time, the snake had four legs. 1. ，the frog had no leg.
The snake was lazy and waited all day for the frog to catch things to eat. The frog also helped people catch pests(害虫)，so the frog was 2. (deep) loved by people. But the snake was not. When the snake found the 3. (true)，it began to bite(咬) people. This was known by the Jade Emperor(玉皇大帝). He 4. (become) very angry and cut off its legs as a punishment. Then, the Jade Emperor gave four legs to 5. warm-hearted frog. The frog was 6. (hard-working) than before.
Gradually, the snake began 7. (realize) its mistake. It stopped doing bad things and even learnt how to work out the water problem from the loong(龙). Finally, the snake succeeded in 8. (control) water. When the Jade Emperor saw it, he thanked the snake by placing it 9. the loong in the Chinese zodiac(生肖). And you know what? Since then, we 10. (own) the snake in the 12 Chinese zodiac.

1. However 2. deeply 3. truth 4. became 5. the 6. more hard-working 7. to realize/realizing 8. controlling 9. after 10. have owned