—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 |
Beijing is ranked first in terms of traffic jams and expenses for culture ________ Guangzhou is more open to peasant workers than Beijing and Shanghai.
| A．when | B．since |
| C．while | D．because |
________ he stops driving himself like this, he'll have a breakdown.
| A．Until | B．Once |
| C．Since | D．Unless |
________ my teacher didn't tell me directly, I still felt that I didn't live up to her expectation.
| A．When | B．Since |
| C．As | D．While |
I was wondering what to do with my car which won't start ________ a kind man offered to help.
| A．while | B．and |
| C．so | D．when |
________ much advice you give him, he does exactly what he wants.
| A．No matter | B．Whether |
| C．Whatever | D．However |