—Do you mind if I smoke here?

—________.

[　　]

—Is it expensive to hire a car?

—________.

[　　]

—Would you like to go to Kate's birthday party?

—________. But when is it?

[　　]

________ , and we will believe what you've said.

[　　]

—I'm sorry. I can't stay with you. I've got to go.

—________.

[　　]

—Excuse me. May I sit here?

—________.

[　　]

—Ouch! I can't bear your weight , young man.

—Oh, ________ , but did I step on your foot?

[　　]

—Could you please tell me the way to the science museum?

—________.

[　　]

—________, but can you tell me the way to the art museum?

—Sure. Go ahead until you come to a crossing. Turn left and you'll find it.

[　　]

—Could I use your computer?

—Why, ________ . Just make yourself at home.

[　　]

A．you can't

B．of course you could

C．you can

D．surely not. You don't need to ask