根据句意和所给中文，用单词的正确形式填空。

1. My daughter is very _____ (诚实的). She never tells lies.

2. Don't tell others about it.  It's a _____  (秘密) between us.

3. You can't take these_____ (杂志) out of the reading room.

4. Don't _____  (相信) him.  He always tells lies.

5. There are some_____ (广告) in the magazine.