– Why does she look so tired?-- She ________ all the morning and she still hasn’t finished it.
—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.
This is the factory _____my father worked ten years ago.