根据句意将括号中的字母组成正确的单词并填空。

1. (herew) —__________ is your backpack? —It's on the sofa.

2. (serdres) Look. The __________ is next to the bed.

3. (nowk)—Where are my keys? —Sorry. I don't __________.

4. (wredra) My mother's gold ring is in the __________.

5. (dinbeh) The eraser is __________ the pencil case.