----Are you a teacher? ----No, but I ______ in Harbin No. 3 High School for 3 years.
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?