阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处 填入一个适当的词或使用括号中词语的正确形式填空。

    Long long ago, there was a wild donkey and a tame (驯服的) donkey.

    The wild donkey was thin and small. He spent his life outdoors. ____ grass on the hill was his food. Sometimes, he had to walk miles to find water. At night there was ____ (dangerous) from wolves.

    The tame donkey was fat and strong. The owner gave him grass ____ he felt hungry. There ____ (be) always water for him to drink. At night he stayed in a stable (驴棚) ____ (safe).

    The wild donkey wanted to live like the tame donkey.

    One day, the wild donkey was looking for grass on the hill. He saw the tame donkey walking slowly along the road. The tame donkey was carrying a ____ (heavily) bag. The tame donkey felt tired and hungry. He wanted to stop ____ (eat) some grass by the road.____ his owner didn't agree. He began to beat the tame donkey ____ a stick.

    The wild donkey changed ____ mind. He didn't want to live like the tame donkey any longer.

世界上人口自然增长率最低的大洲是（  ）

根据提示补写名句或填写课文原句。

①独学而无友，____。

②____，则无败事

③____，病树前头万木春。

④芳草鲜美，____。

⑤斯是陋室，____。

⑥《白雪歌送武判官归京》中用新颖传神的比喻来咏雪的千古名句是：____，____。