144) Как построить дальше предложения после первых слов? Поставьте запятые, если это не обходимо. Иногда возможно несколько вариантов (1 будет достаточно НАДО!

Days add up to weeks, weeks to months, and months to years. Without a calendar, it would be difficult to determine which day or month it is. It consistently lists the days of the week and months for the whole year.
The word “calendar” translated from Latin means literally the following: “loan entry”, “debt book”. The fact is that in ancient Rome, debtors paid debts or interest on them in the days of calends - in the first days of the month. Hence the name. But the Greeks cale was not. Therefore, the Romans said ironically about hard-core defaulters that they would return the debt to the Greek calends, that is, it is not known when. This expression has become popular in many languages ​​of the world. Well, the modern 12-month calendar appeared thanks to the Roman emperor Guy Julius Caesar. Prior to this, there was a calendar of 10 months running. In the four-year cycle, three years have 365 days, and the fourth, 366 days. Thus, it was possible to achieve the correspondence of the calendar of the time of the Earth’s revolution around the Sun.
In Slavic languages, Monday has the meaning of the first day or, according to one version, the day after the week, since “Week” is the old Russian word for modern Sunday. In Hindi, Monday is the Day of the Moon.
In Slavic languages, this day is clearly read as an ordinal numeral, that is, it is the “second” day of the week. In Hindi, Tuesday is Mars Day.
In the Slavic "environment", "middle", etc. The ancient Russian name of the medium "tretnik" is rarely found. Note that astrologically, Mercury is considered to be an average, asexual planet - neither male nor female. In Hindi Wednesday - Mercury Day.
In Slavic languages, Thursday, like Tuesday, is a purely numerical value of the fourth day. In Hindi, Thursday is Jupiter's Day. They have a direct connection with the ancient thunder god Thor, the counterpart of Jupiter.
Friday has a parallel with the Norse goddess of fertility and love Freya (Frigga), an analogue of the Greek Aphrodite and Roman Venus. In Slavic languages, this day is within the meaning of the "fifth". In Hindi, Friday is Venus Day.
The Russian name "Saturday" goes back to the Hebrew "Shabbat", meaning "peace, rest." In this sense, one of the astrological meanings of Saturn - motionlessness, concentration, successfully echoes Shabbat. Interestingly, the Slavic languages, for no reason at all, are unanimous with the Latin, their Sabbath means "the day of ablution", from where we learn that the ancients washed themselves once a week. In Hindi, Saturday is Saturn Day.
Sunday is the Day of the Sun in Latin, English and German, in many languages ​​this day is indicated by various variations of the word "Sun / Son" (Sun). The Russian "Sunday" appeared in the same way, replacing the old name for this day, "Week", successfully preserved in other Slavic languages ​​- Week (bol.), Nedilya (ukr.), And others. In Hindi, Sunday is the Day of the Sun.
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Русский язык,как его ещё называют Великий Русский язык, относится к индоевропейской семье языков. Так как русский это широко распространёный язык,
считается что это один из основных языков в мире. Знание русского языка открывает дверь изучения богатой русской литературе,искусству.музыке.Русская литература считается одной из самых красивых и волнующих литератур в мире. Русский является родным языком великих людей которых знает весь мир: Толстой, Чайковский,Павлов,Сахаров лишь одни из них. Русский котируется как очень сложный язык.Если ты говоришь на итальянском,французском или немецком ты выучишь русскую лексику быстрее,так как много слов было заимствованно в 18 и 19 веках из этих языков.Если ты не путешествовал по России  и не имеешь русского друга по переписке ты должен практиковать язык другим Есть богатое количество книг и DVD которые "ждут" тебя и многие доступны в местных русских магазинах. Если ты будешь изучать русский один час в день регулярно,ты возможно свободно овладеешь им через три года. А если есть возможность читать газеты со словарём,то  результат может быть достигнут за год.