根据下列句子的意思及所给的汉语提示，写出空缺处单词、固定短语或固定搭配的正确形式。

1. You can go to the ____ (丢失的) and found. Your pen is there.

2. The ____ (手表) is very nice.

3. His ____ (笔记本) is new.

4. —Are these your ____ (橡皮)? 

    —Yes, they are.

5. Please answer this ____ (问题).