_____in the queue for half an hour，the old man suddenly realized he had left the cheque in the car.
| A．Waiting | B．To wait | C．Having waited | D．To have waited |
—Would you mind answering some questions on shopping habits?
— ________.
| A．Yes，with great pleasure |
| B．No，I am afraid I can’t make it |
| C．Yes，it is worth the time |
| D．No，as long as it doesn’t take long |
—Excuse me，but could I trouble you for some change?
—________.Will pennies do?
| A．I know | B．Never mind |
| C．I am sure | D．Let me see |
—Hey，can I ask you a favor?
—Sure，________
| A．here you are. |
| B．just as I thought. |
| C．how is it going? |
| D．what can I do for you? |
—How far can you run without stopping?
—________.I’ve never tried.
| A．Don’t mention it | B．That’s all right |
| C．I have no idea | D．Go ahead |
—Would you like a glass of wine?
—________.I don’t drink.
| A．No，thanks | B．Yes，please |
| C．I don’t like it | D．It’s my favorite |