The father seldom had time to share with his children, because he devoted most of his time _______ research in his lab.
-----I stayed up late last night preparing the speech. -----__________ you look so tired today.
Peter’s jacket looked just the same as Jack’s, but it cost ___________his.
You were charged________ignoring your duty. Who accused you_______such a crime?
I hope, first of all, that we shall never lose _____ heart in face of _____ failure.
--- Personally, I think it is the sales manager, rather than the salesgirls, ______ to blame.--- I can’t agree any more.