A、  B、  C、  B以where开头进行提问时，应该回答“场所”。art exhibition意为“美术展，艺术展”，be held意为“举办”。(A)“to+动词原形”用来回答目的、原因。(C)这里没有提到美术展中作品

(Woman) Who ordered a new computer for the office?
(Man) (A) Mr. Sanchez did.
(B) Tomorrow.
(C) Yes, a new computer.

(Man) Where is the art exhibition being held?
(Woman) (A) To raise money for charity.
(B) It’ll be at the city gallery.
(C) Watercolor paintings.