So I actually disagree with Alyx here (slightly). Both can be correct, without any difference of meaning. The addition of the last comma in a list (here, between "mountains" and "seas") is called the Oxford Comma. There is bitter disagreement among native speakers about if one should use the Oxford Comma. I think yes! It often serves to aid comprehension by indicating that the last items are part of the list, and not descriptions of what came before. To give a classic example: "I saw the strippers, Stalin and Roosevelt" could indicate that Stalin and Roosevelt are the strippers! Meanwhile, "I saw the strippers, Stalin, and Roosevelt" clearly shows that you saw three separate things: strippers, Stalin, and Roosevelt.

(You may get better responses in the "exercise" tab, where people can mark up your writing. I put my changes in **stars** below.) There is a rule in my family. In the morning I need to make my bed. If I forget **to**, l lose part of my **allowance**. Unfortunately this morning I **forgot to do it** and **my parents** took part of my allowance. I don't think it’s fair. **Looking at** most of the other kids my age in the neighborhood, they have a full-time maid. I doubt they lose part of their allowance. _______ Overall, nice job. Be careful with tenses (e.g., using the past tense "forgot" when necessary). The phrase "making a comparison with" sounds unnatural, so I substituted something that sounds more natural to me. Finally, you can't say "I think they will not likely to lose part of their allowance.” Your use of "doubt" was very good and more clear to me. If you *had* to use that other phrasing, you would want to say something like: ” I don't think it is likely that they lose part of their allowance”.

It overall is clear. My (unnecessary) changes would be to write: "She gets out of the car, leaving her own child's side in order to save another child from a monster." "Leaving her child" or an alternate phrase like "leaving her child behind" sort of implies that she is *permanently* leaving her child (and makes the woman sound unsympathetic). "Leaving her own child's side" implies that she is physically leaving for the moment, but will return to her child. It also emphasizes that she is risking her *own* child to save another, making her sacrifice and heroism more clear.

There is no real difference. Response and reply are synonyms in this context. I'd probably default to using "sorry for the late reply", particularly in emails.

Overall, your English is great! It sounds pretty natural (slightly Australian maybe?). There are occasionally words that jump out a little and make me know that you aren't a native speaker (e.g., horizon), but they are few and far between.

It is only used in very certain situations, and isn't really a general synonym for "support". The first is when someone proposes an idea and is pretty formal. After the first person proposes the idea, the second person "seconds" the idea. This indicates her support for the idea, and it goes forward to a debate. This happens, for example, at the United Nations. The second is old-fashioned and has to do with duels. Historically, when one person challenged another to a duel, each side would choose "seconds." These seconds would show up to the duel alongside the person fighting to make sure that everything progressed fairly and the rules of the duel were followed. They would also try to negotiate with the other second before the duel to prevent it from happening / anyone from being killed. Because dueling has been outlawed for ~175 years in the US, you don't really see it being used very often in this way.

Unless: "Unless you focus *on* my class, you'll not succeed." You focus *on* things, not "of" things. I'm also not sure what you meant by "you'll not get a chance", so I just wrote in how I'd expect the sentence to end. Both of your "until" sentences are correct and sound natural!