what is correct there are two sentences which is right? i was thinking of what we talked last time i thought of what we talked last time Thank you for help)

help please write in english please the date "in the early 1900s". i cant read the date "1900s". How its read

i am doing the test A solitary mountain rising from the plain of Campania has a base 50km and is surrounded by two summits, of which the______(high) is the cone known as Vesuvius proper. What form of words should be in place badge: higher or highest, and why? Thanks for the answers...

When should you start a question with the word "do" and when the words "is", "are", "am"? Thank you

First notebook entry: Introducing myself Hello! I want learn English language very well))) Because it is very interesting!