at the end of the 19th- beginning of the 20th century/centuries there was.... could anyone please tell me which option is better century or centuries in such a case

I will do it by Friday/ I will have done it by Friday Is it true that both of them are correct but the first one is preferred in spoken English? Or they are both correct but it's the question of emphasis..

may-might-could: do natives feel the difference in the spoken language? in some sources they say that "may" and "might" are nearly interchangeable, some claim that they go in such an order: "may" is the most probable, then "could" and "might" expresses the least probable situation. could anyone please help me to clear this up... just wether this difference is really felt or not and which one of these is used most frequently

A la sonrisa :) No hay nada mejor que una sonrisa sincera de otra persona que Ilumina este mundo con un poco de su luz, Las personas estás tan bellas cuando sonríen... La risa y las sonrisas ayudan a superar los momentos dificiles y desagradables de forma ligera :) Y lo mejor es que no nos cuesta nada y a la ves puede enriquecer a alguien y mejorar el día de otra persona.. Así que, la gente bonita, sonreímos más a menudo! <3

Una entrada gratis, concierto de Manuel Carrasco

what does the phrase "take quarters " mean?) I saw a joke on the internet : "A crackhead sold me a washing machine for 25 dollars , then I got home and realized da MF take quarters" Could anyone explain me please the joke, the phrase "take quarters" in particular

owing to/ due to Could anyone please resolve one doubt of mine ? İs there any difference between owing to and due to? Do native speakers feel the difference? For example, in the sentence "it happed due to/owing to the employee's negligence".. which one would you go for? :)

uncareful/careless is the word "uncareful" used? in some sources they say it's become an outdated form and careless should be better used; some dictionaries say this word exists and can be used.. So, could anyone please clarify wether or not the word "uncareful" is common to use :)

a week's trip/ week's trip ? I saw a quiz which read like this: I have two _________ holiday! I can't wait! A weeks B week's C week D weeks' I instantaneously opted for D. But then I wondered, because "I have a two-week holiday" is good as well. In some forums I found natives saying that it's either two weeks' holiday(without an article) or a two-week holiday (with). The question is: Does it work this way with all the other nous too? For example, is it correct to say "an hour's ride", "a week's trip", "a two kilometeres' walk".... Or I have to say "hour's ride", "week's trip'.. If not, why the example with the holiday is different? Being a Slavic person, I struggle with articles a lot :) But I'd love to understand this particular example! I would appreciate any clarifications :)