Jack : Hey, how are you, Susie? Gee, we haven't seen each other in...it must be close to three years !

Susie : ___________

A. How do you do?

B. Nice to meet you.

C. Fancy meeting you here.

D. Well, French fries.

C 【解析】?jī)墒煜さ呐笥言俅我?jiàn)面，表達(dá)了他們的欣喜之情。A，B兩項(xiàng)一般用于陌生人初次見(jiàn)面時(shí)的客氣用語(yǔ)；而D表示“炸土豆片”；唯有C項(xiàng)表示“真沒(méi)想到在這里碰到你”。符合上下文語(yǔ)境。