Answer: A formal letter is done with strict etiquette and dignigfied to consitue it's importance to the given occasion. A sem-formal letter combines formal and infomal elements when it comes to the tone. Lastly, an inform letter is written to give facts on a situation ro notify them about spefic information.
Explanation:
<span>1940s 1970s 1980s 1990sum 70's.
i think
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Not sure if this is right, but I think it is
(1. "O heavy lightness! serious vanity!"
(2. "Feather of lead, bright smoke, cold fire, sick health!"
The source stands to make a profit