I can never forget the days _____ we worked together and the days _____ we spent together.A. when; which B. which; when C. what; that D when; when
―Have you finished your composition already? ―Yes. I _________ it in twenty minutes.
He traveled to many mountain villages and saw many poor children out of school. This experience _______ his life.
You _______ things about. Look, what a mess in your room.
―You haven’t said a word about my new hair-style, Molly. Do you like it? ―I’m sorry I ______ anything about it sooner. I certainly think it’s pretty.
We plan to reach the North Pole in mid-July, and by then we _______ for six weeks.