连词成句，注意大小写，标点符号。
1. excuse I can pencil use your me (?)
2. is Where his ruler (?)
3. in my book desk is the (.)
4. bag is under my the chair (.)
5. the the rabbit behind is monkey (.)
1. Excuse me, can I use your pencil?
2. Where is his ruler？
3. My book is in the desk.
4. My bag is under the chair.
5. The rabbit is behind the monkey. / The monkey is behind the rabbit.