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

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

After I started working with a tutor my grades improved.

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

I started working with a tutor after my grades improved.

Respuesta :

Hi,

The correct option above in which portrays correct usage of punctuation is option 3. 

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


Faith xoxo
The answer to your question is the third sentence.
After I started working with a tutor, my grades improved.
Q&A Education