Answer:
A. The rent man knocked. He said, How-do?
Answer:
A, thou shall not commit adultery
Basically it is to organize your thoughts. You would usually make a Topic Web before you do a research paper, or essay.
Hope this is the answer you were looking for and that it helps!! :)
1d) was designed (long time ago so past tense)
2d) Has been repaired (It is still going on the present, this year)
3c) Had discovered (He discovered America long time ago)
4a) To have worked (worked long ago when he was young)
Hope it helps!