I learnt a few here myself. 🙂
Acronyms are abbreviations formed from the first letters of words in a phrase.
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The most popular here would be ASAP, BTW, ETA, FYI, LOL, OMG, PM, ppl, thx, XOXO
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Preposition mistakes happen when the wrong preposition is used. For example “They reached at the airport at 6pm.” -incorrect . “They reached the airport at 6pm.” – correct.
These are typical mistakes that I hear from English students. Especially 3 and 4. 8 is ok both ways.
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