阅读下面材料，在空白处填入适当的内容或括号内单词的正确形式。

There is a boy named Henry. He is (real) a kind boy. One day he sees a cat at his door. The cat (look) sad (伤心的) and Henry thinks it must be lost. So he decides(决定) to help cat find its home.

He calls the Lost and Found office. But they say no one loses a cat. Then he asks (he) friends next door. But they don't lose their (cat). Henry wants (ask) his parents for help. But they're not home. That evening, Henry can't sleep well. He wants to help the cat doesn't know how. He puts it in a box.

The next morning he puts up Lost and Found notices (启事) all around his building. On the (three) day, a girl named Anna calls Henry to get the cat. She says thanks to him. They (be) very happy.