The two international companies reached an agreement, which was based on their             talks.

-- You seem to be burning yourself out with so much work!-- ______. I'm dying for a thorough rest and a good workout.

You must attend the meeting ____ at ten o’clock, as it is scheduled—not a minute early or late．

Though some foreign scientists had a ______ opinion of his new invention, his fellow workers never thought ____ of it.

Failure hurts adults and children ______ , but it can make a positive contribution to your life once you learn to use it.