—So, what's the matter with you then?
—Oh, nothing. ________.
—Why's that? I thought you were pleased about the new job and going to New York.
—Yes, I am. It's just I've been here for so long and it's hard to think of anywhere else as home.
句意： — 出什么事了 ? — 噢， 没事， 我只是觉得有点不自在。 — 为什么 ? 我以为你有了新工作又能去纽约会很高兴。 — 没错， 但我只是在这里住了太久， 很难再把别的地方当自己的家了。 由空白部分之后的对话可知， 说话者因为要去一个新的地方而感到不习惯， 因此 A 项符合语境。