______the end of last term, every student in the school, I think, has taken at least five maths tests.
It is the third time that she has won the race, _______has surprised us all.
He was generous with his time, ________ I was grateful.
I felt bad _________ I talked to a group.
Only then ___________ to answer violence with violence.
However, this was a time _________one had got to have a passbook to live in Johannesburg.