Question

Firstly, I want to congratulate you all. Secondly, I would like to wish you good luck and ... I hope you have enjoyed the course. O in the end O finally O at last

Answer 1

And FINALLY I hope you have enjoyed the course. So the answer is: finally

Answer 2

Thank you for your congratulations! To complete your sentence, you can use any of the following options:

1. Finally, I would like to wish you good luck and... I hope you have enjoyed the course.
2. At last, I would like to wish you good luck and... I hope you have enjoyed the course.
3. In the end, I would like to wish you good luck and... I hope you have enjoyed the course.

Any of these options would work to convey your message.