Sadly the reading room where Karl Marx did a lot of reading had moved from its place into another building.
I posted a book to her three weeks ago. She________have received it.
She________have been to your house. She doesn't know your address.
—I'm sorry, Mrs Smith. I've broken your glasses.—It doesn't matter, Marks, but you________careful.
I can't find the recorder in the room. It________by somebody.
—Why was Alice late for her meeting yesterday?—She________the first early bus.