—I am sorry.I have left my credit card home.And I don’t have enough cash for the meal.
—Don’t worry. .
| A．I’ll invite you |
| B．It’s my pleasure to pay you |
| C．It’s my treat |
| D．It’s at your expense |
―________ for Beijing?
―Yes. And I’ll come back in three months.
| A．Have you left | B．Are you leaving |
| C．Do you leave | D．Did you leave |
―What were you doing when I called you yesterday afternoon?
―I ________ my homework and I was starting to take a bath.
| A．had just finished | B．was finished |
| C．have already finished | D．was going to finish |
―Twenty dollars, please!
― How terrible!―I ________ to bring my wallet with me.
| A．was forgetting | B．forgot |
| C．had forgotten | D．am forgetting |
―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.
| A．am just thinking | B．just thought |
| C．have just thought | D．was just thinking |
―What about 10 o’clock tomorrow morning?
―I’m afraid I can’t make it. I _________ then.
| A．am going to take an exam | B．am taking an exam |
| C．will be taking an exam | D．an to take an exam |