根据所给汉语完成单词。

1．He              （抱怨）that he had been unfairly treated．

2．Would you like a              （家庭教师）to help you with math?

3．The first time he went into the room he heard a            （奇怪的）noise．

4．The children              （跟随）their parents into the room 5 minutes ago．

5．Could you tell us your               （经历）as a volunteer in that small village?