You must apologize ______ your mother ______ your rudeness.
The reason ____ she gave us for being late for school was ___ her bike broke down.
—Have you moved into your new teaching building?---Not yet. It ________.
--How about going for a walk? -- _____, but maybe it would be better to play cards.
Do you know the year _____Einstein died?
That is the reason _____I refused it.