When they were dragging her away, the little girl reached out her hands in _______ want of her mother.

A. curious   　 B. desperate  　　高☆考♂资♀源?网　 C. sincere 　　　  D. serious

—I’m sorry to have kept you waiting.

—　　 . 高☆考♂资♀源?

A. You’re welcome B. Go ahead C. No problem D. Don’t mention it

—Don’t interrupt me while I’m explaining the key points to you.

—All right.　　 . 高☆考♂资♀源?

A. Wait a moment B. Go ahead C. Take your time D. Forget it

—It’s very kind of you to have carried the luggage for me.

—　　 . 高☆考♂资♀源?

A. I’d love to　 B. My duty C. My pleasure D. All right