________ if you want to do something, or you won’t be able to do it well.
We won’t give up ______________we should fail ten times.
___________, Mother will wait for him to have dinner together.
After the war, a new school building was put up ___________there had once been a theatre.
—What was the party like? —Wonderful. It’s years __________I enjoyed myself so much.
He didn't make ______ clear when and where the meeting would be held.