(THIS IS MY CORRECTION) Hi... I read your project and I am ready to finish it finely. I have worked on many types of Google map projects and also Leaflet. Js. I can help you to finish the job accurately and faster. Please let me know if you have any question. I can give you more suggestions in order to improve your project as well. Thanks, XXX.

Question: Which one sounds natural to native speakers? Why? Answer for me is: I met my sister IN KFC this morning. Though the two are both correct have different meanings.

It is possible but it is definitely hard. Since all languages have different grammar constructions, vocabularies, pronunciation, accent, etc. If you are a little kid who's still learning to speak it may be easy for you since children were proven to learn languages easier because they haven't been exposed to one language for too long yet but for adults like us we have to cram to learn even just one language. Learning a language is exposing yourself to it no matter how many languages is that so if you really want to do it then start reading a story translated to three languages. I hope this helps.

What is the difference between break up and break down a relationship? Thank you. = Break up refers to separating from a romantic relationship. Break down refers to loosing up all the negative emotions the person has been keeping for a long time. Ex. The mother of my friend break down just now because she knew that her husband was cheating on her for a long time but never told anyone about it. = They totally have different meanings but they can both be associated in a relationship.

My question is why put which and why not just use one of them? = The use of "which" here is okay just like you can also say use of "them". "which" is used here to give emphasis on the particular reason compared to if you use "them" it is saying that it is just one of the reasons why but it is not most important. If you make use of "which" just like in this context it is saying that it is the most important among all the other elements.

“until we had to avoid telling ...for fear of the extra chapters. ”？ = I think what this means is that, they need to avoid mentioning this secret to anyone because if they don't, the extra chapters (of whatever this is, a book or it could be anything) will be spilled out.

spurning a tent and sleeping bag = rejecting a tent and sleeping bag.

Not even all isn't a good phrase, but from my point of view it means not even a single of population from the entire world which is equal to no one in this world.