根据句子意思及所给的中文提示完成单词，每空只能填一词。

A ____ (狗) is sitting in front of the house.

When she heard the bad news, she was very____ (失望的).

May is the____ (第五) month of the year.

People in the US always open their gifts ____ (立刻) when they receive them.

As a teacher, I'm glad to see my students ____ (成功).