A、The next day. B、On Saturday. C、In three days. D、In one week, B信息明示题。女士询问包裹能否在自己妹妹过生日那天，也就是周六寄到，由此可知，她妹妹的生日是周六，故选B。

M: Hello, National Express Courier Company, Customer Service Department.
W: Hello, I have some questions about a package I’m going to send. Can you help me?
M: Yes, ma’am. What would you like to know?
W: I have a box of homemade candy, and 1 want to send it to my sister. It’s a birthday present. Do you have any special rules about delivering food?
M: No, not in this case, ma’ma. If you were sending fruit or vegetables, they would have to be packed specially. But there are no rules about sending candy.
W: OK, I have another question. I’m very concerned about the package reaching my sister on time. Can you make sure that it will be there by her birthday on Saturday?
M: Where does it have to go?
W: California.
M: Hmm. Saturday’s only four days away. We have a priority service that would guarantee delivery in three days but it’s more expensive than our regular rote.
W: Well, I don’t want to waste money, but it’s more important that the package be there on time.
M: OK. Bring your package to the office, and we’ll send it by priority service.
W: OK. I’ll do that. Thanks for your help.
M: It’s my pleasure.