【小学·完形填空·A Little Dog】
阅读下面短文，从各题所给的四个选项中选出可以填入空白处的最佳选项。

My uncle has a little dog. Its name is Coco. Coco is black and white. It has two big eyes and a short tail.
Coco likes to run in the garden. Every morning it runs after a ball. It is very ______. When I come home, it always wags its tail and jumps up. It is happy to see me.
Coco eats dog food and drinks water. It sleeps in a small basket. I like Coco very much.

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