—Will you be this afternoon, John?—I am afraid not. I have an appointment with my dentist.
The match was canceled because most of the members _____ a match without a standard court.
The manager promised to keep me _____ of how our business was going on.
–Who are those people with the banners (标语)? –A group _____ itself the league for peace.
His poor _____ English prevented him _____.
_____ as a candidate for the post of school principal, one must have at least ten years of teaching experience.