Asked by Gangster TV

Which is the best way to combine these sentences using correct punctuation?



A: I started working with a tutor, then my grades improved.


B: After I started working with a tutor, my grades improved.


C: I started working with a tutor after my grades improved.


D: After I started working with a tutor my grades improved.
Answered by GPT 3.5
B: After I started working with a tutor, my grades improved.