Which is the best way to combine these sentences using correct punctuation? A.) After I started working with a tutor my grades i
mproved. B.) I started working with a tutor, then my grades improved. C.) After I started working with a tutor, my grades improved. d.) I started working with a tutor after my grades improved.
The answer to your question would be that the best way to combine these sentences using correct punctuation is the following one: After I started working with a tutor, my grades improved. That is, the correct option would be C.
"After I started working with a tutor" is an introductory clause. Introductory clauses are dependent clauses that provide background information or "set the stage" for the main part of the sentence, the independent clause.
Because back then they believe that if they didn't see it then it is not there or created for example when the french believe that the earth is flat but we know now that it is round.