1. What are the main duties of aircraft maintenance technicians?
2. What are aircraft maintenance technicians?
3. What do they service?
4. What do they have to do?
5. What parts do they repair?
6. What can be replaced?
7. What do they have to use while working on fuselage?

1. Her brother said he HAD never SEEN that film before. 2. He came home and listened: his son WAS PLAYING the piano. 3. They didn't worry too much because they HAD LOCKED the door. 4. I asked her when she WOULD GIVE me that book to read. 5. We wanted to know if they HAD ENJOYED the meal. 6. She supposed she WOULD LIKE the hotel. 7. I am afraid they HAVE NOT COME yet. 8. He wanted to know if the station WAS far away. 9. Eric doesn't know who PHONED him at five o'clock. 10. He admitted he HADN'T BEEN  here for weeks. 11. She was sorry she HAD ARRIVED so late. 12. Jean promised she WOULD never SPEAK to me again. 13. Andy said he HAD just BOUGHT a new car. 14. My mother decided that she WOULD never DRINK coffee late at night. 15. I hear you HAVE already FOUND a new job. 16. We were sure our children WERE SLEEPING. 17. I didn't think they WERE still DISCUSSING that problem. 18. It is remarkable that you HAVE COME at last. 19. My doctor thinks I AM allergic to pineapples. 20. Sophia knew her aunt WOULD BE glad to visit her in two days

A long time ago one of my best friends underwent bullying from his classmates. I would see it everyday. Day by day it got worse, and I was getting worried. When I asked my friend about this though he just said that it was nothing to worry about. Of course I understood that he didn't want to worry me, but I still felt like I had to do something. Because it was agonizing to see strangers throw rocks at him or call him bad names.
Since there was no clear sign of this getting better, I decided one day to stand up to his bullies. I tried to settle them down, and talk rationaly. In the end though we ended up fighting. 
I was happy that I stood up for my friend though.
And afterwards, when we discussed the problem with the adults at our school, it eventually went away.