Dear Professor Tang,
I have already granted your approval for dropping ISE2S02S in email form. However, I have been told that I have to fill Subject Withdrawal form instead and asked to get approval with signatures from subject leader to the Subject Withdrawal form.
I acknowledge from friends that there will be a quiz on 6/19's ISE2S02S class. I would like to ask that whether you will be in the venue (N003) after the quiz for discussing the matters. If not, please suggest an appropriate time and place for meeting. Thank you very much.