_______ to carry out the plan in time, they will make careful preparations.
ou can't wear a blue jacket _____ that shirt — it'll look terrible.
It is quite clear ____ he won't see us.
1 feel that one of my main duties ______ a teacher is to help the students to become better learners.
___ he did it remains a secret.
It was a pity that the great writer died _________his works unfinished.