—Mum, have you seen my U-Disk?—_______ you bought last Sunday? I'm-afraid I haven't seen _______.
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.
He________you more help, even though he was very busy.