题目内容：

根据句意，用下面所给单词完成句子。

inventor  required  postmen   leaves  absent

 

1.All the visitors are_________ to show their tickets.

2.There are many_____working in the post office.

3._____on the tree turn yellow in Autumn.

4.Little Tom is often _______ from his class.

5.It is well known that Edison is a great ______.