Honesty is a basic element in friendsmaking and that is ________ it requires to keep everlasting friendship.
_______ many times, he finally understood it.
Ladies and gentlemen, please remain ________ until the plane has come to a complete stop.
He told us whether _________ a picnic was still under discussion.
--Has your teacher returned from America yet? --Yes, but he _______ here for only three days before his company sent him to Africa.
It is said that he will______ his uncle’s business when he is mature enough to deal with the pubic relations.