Give the correct form of the verb

1.DON'T FORGET TO ______ THE MODEM WHEN YOU HAVE FINISHED USING IT(CONNECT)
2.BEN SULKS LIKE A CHILD WHEN HE DOESN'T GET HIS OWN WAY.HE IS SO _________(MATURE)
3.OLIVER'S CV IS TRULY ________. HE'S BOUND TO GET THE JOB.(IMPRESS)