A、  B、  C、  A本句为Who引导的疑问句，在询问建筑物的设计者。

Did you eat lunch already?
(A)A fast-food restaurant.
(B)No, not yet.
(C)I don’t eat meat.

Who designed that building?
(A)Mr. Davis, I believe.
(B)Four years ago.
(C)No, that was your project.