Answer:
1. We have our document saved.
2. I have the speakers on the shelf.
3.He has made a mess.
4. She has her homework printed.
5. Have you finished everything?
6. I printed my homework and I have finished it.
7.She has saved her documents on a stick memory.
8.We have finished our homework.
9.I have my room tidied.
10.We have turned the printer off and we logged off.
11. She has made a plane model.
12.He has put on his coat.
13. He has made his bed.
They jave put away their toys.
the correct sentence is D.
It would be using other people’s ideas without giving them credit.