Even though it is at least 20 years _____ we got to know, I can’t forget the scene_____ we were introduced to each other.
He insisted that the sky ____ clear up the following day.
You should treat him (in) the way ____ suits him most.
--- How long have you been here? --- _____ the end of last month.
We keep in touch ____ writing often.
Who is it up _____ decide whether to go or not?