1. 阅读短文及文后选项，选出可以填入空白处的最佳选项。

Once upon a time, there was a king who had a grand palace with a beautiful garden. In the garden lived all kinds of animals.

The king liked everything in the garden except(除……之外) one thing—the big tree in the centre of the garden. It was old and dry and it made the king so angry that he finally asked some people to cut it down. But after that, the animals left the garden one after another.  The king was sad, but he didn't know what happened.

Hearing the news, a wise old man went to the king, and said he could tell him what happened. "This was because you cut down the old tree," said the old man. " Birds ate the moths(飞蛾) and then they produced waste for plants to grow. The plants then attracted(吸引) many other animals to your garden. So your garden became very beautiful. "

 Only then did he know the importance of trees.

A. How regretful(后悔的) the king was! B. And all of them enjoyed living there. C. There were thousands of moths living in the tree. D. But the animals had to leave because you cut down the tree. E. Without the animals, the garden was not as beautiful as before.