题目内容：

阅读短文，根据短文内容，从短文后的四个选项中选出能填入空白处的最佳选项。每个选项只能用一次。

Ever since a 71-year-old Brazilian(巴西的) man, Joao Pereira de Souza, saved a dying penguin(企鹅), he's been receiving visits from his feathered friend every year.

In 2011, Pereira de Souza found a hungry Magellanic penguin on the beach near his house. He named the penguin "Dindim" and fed it every day until it was strong enough to leave.   1.   Pereira de Souza decided to take Dindim out into the water by boat and drop it off to encourage it to swim home. But when he was back to shore(海岸), he found the penguin waiting for him."  2.   Then just after it changed its coat with new feathers, it disappeared," Pereira de Souza told TV Globo, a Brazilian TV network.

Magellanic penguins regularly swim thousands of kilometers a year to find places to have their babies on the coast of Argentina and Chile. 3.   Many of Pereira de Souza's friends thought that when Dindim finally left, that was it for the human-bird friendship. But a few months later, Dindim returned and found Pereira de Souza. "It arrives in June and leaves to go home in February, and every year it becomes closer to me," Pereira de Souza said, "   4.   If others try, it pecks(啄) them or waddles away. "

A. From time to time, penguins show up in warmer Brazilian waters. B. I am the only person who can get near to Dindim. C. It stayed with me for 11 months. D. But the penguin refused to go.