根据中文完成句子

我不知道他们什么时候回来。

I have no idea when ________ ________ ________ ________.

在下面短文空白处填入一个适当的词，形式不下确不得分。(答案写在答题纸上)

Simon wrote his question on a piece of paper before he went to sleep. And he found his father's answer when he woke up.

Question:

　　The most popular girl in school, Andrea, invited (1) ________ to a party, but she didn't invite my best friend Barbara. I didn't even tell Barbara (2) ________ the party because I don't want to hurt her feelings.

　　Today Barbara invited me to go to Disney World with her family on the same weekend as the (3). I didn't really (4) ________ yes or no, and I think that hurt her. I would love to go to Disndy World, but I don't want to miss the party, and I don't want to lose Barbara as a friend.

　　I have to give her an (5) ________ soon. What can I say?

Answer:

　　Do you really like Andrea? Or do you just want to be with the popular kids? And what about Barbara? Do you really (6) ________ about her? Or do you just want to go to Disney World?

　　I don't know the answers to these questions, but you (7) ________ them. You have no idea because you want to have everything, and that' s not (8) ________. You need to find out what's really important to you and make a choice.