HOW TO SUMMARIZE- ways to do it

I had taught a man at 5 PM.
Later, I taught his wife at 7 PM. 
I am teaching you now, Khiem.
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1. I have been teaching a man, his wife and you since 5 PM.
2. A man, his wife and you have taken my lessons since 5 PM.
3. Three, including you have taken my lessons till now.
4. You including a married couple have learned with me till now.
5. Till now, I have been teaching 3 learners, including you.
6. Since 5, I have been teaching a couple and you .
7.Those, taking my lessons since 5, are a couple and you.