A、In a laboratory. B、At a party. C、In a supermarket. D、In a garden. D

M: So how much was your plane ticket?
W: More than I could really afford. I had to dip into my saving.（女士说机票的价钱超过了她所能承受的，她不得不dip into saving“取存款”，可见机票很贵。）
Q: What does the woman imply?

W: These tomatoes are huge and fat. You must have watered and fertilized them a lot.
M: Yes, I did. They ought to be ripe enough to pick by the next Friday when we have our party.（男士说等下周五聚会的时候西红柿就该熟透了，再结合女士话中的These tomatoes 及watered and fertilized them 推断，两人应是在花园里针对西红柿植株展开对话的。）
Q: Where did this conversation most probably take place?