—The ice cream is really delicious. Can I have some more?
—________.
A．Behave yourself B．Please yourself
C．Do it yourself D．Be my guest
—Is this Mr White's office, Mary?
—Yes, ________.
A．all right B．it doesn't matter
C．after you D．help yourself
—Jenny, it won't be long before I receive the admission letter from Oxford University.
—________
A．Good luck! B．Congratulations!
C．Why so soon? D．Don't worry.
—Shall we ask Diana if she'd like to join in the party tonight?
—________. I'd like her to join us.
A．As you wish B．You're welcome
C．Hurry up D．Not likely
—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
