1.The former president insisted on______back to his country

1.The former president insisted on______back to his country at once.
A.being returned B.returned C.sending D.being sent
2.Why not put the meat in the fridge?It will_____fresh for several days.
A.stay B.be stayed C.have been stayed D.be staying
3.I don't think i am ______;It is said that ____is the mother of success.
A.a failure;failure B.failure;a failure C.a failure;a failure D.failure;failure
4.You must follow your teacher's instructions and do everything ____you_____.
A.as;are told to B.as;told C.like;are told to D.like;told
5.Finally they managed to find a path______.
A.to follow B.following C.to go D.going
6.This is the very reason______he was late for.
A.that B.why C.which D.as