I do not know the answer but why not look the words up in the dictionary.
Answer:
Most would say, your best subject is probably one you excel at. I, on the other hand, believe that the best subject is one that interests you and you don't need an incentive of a good grade to start the initiative. Therefore, my favorite subject is history. Although many would say it's boring and you don't need it, I find it interesting how people back then lived their day to day lives. In conclusion, history, in my opinion, is my best subject.
Explanation:
Don't worry I did this in my own words ;) also I don't really like history.
The answer is "could have forgotten" since you is the subject, you wouldn't include that in the verb phrase.
Answer: Good deeds are the means to reach a higher plane and likewise bad deeds lead to destruction and doom
Explanation: It is like Karma. Good deeds are the means to reach a higher plane and likewise bad deeds lead to destruction and doom