No one knows the age of the old man wandering in the street all day, but judging from his appearance, he is in his sixties.
―Why? Where is the key to the sound lab? ―Dear me! You _______ it in the taxi!
―________ for Beijing? ―Yes. And I’ll come back in three months.
―What were you doing when I called you yesterday afternoon? ―I ________ my homework and I was starting to take a bath.
―Twenty dollars, please! ― How terrible!―I ________ to bring my wallet with me.
―What’s the matter? You look worried and restless. ―Oh, nothing really serious. As a matter of fact, I ______ of my graduation thesis. I have to hand it in soon.