When I visited the city of Rome，I found the buildings，squares and parks in very different styles．
A. tobedesignedandbuilt
B. todesignandbuild
C. designedandbuilt
D. designingandbuilding
网友回答
A. tobedesignedandbuilt
B. todesignandbuild
(答案→)C. designedandbuilt
D. designingandbuilding
解析：句意：当我去参观罗马时，我发现许多建筑，广场和公园都被设计成不同的风格。这里buildings，squares and parks与design and build是被动关系，又因为动词不定式的被动式表示将要被设计成，根据句意不符合语境，故排除A，故选C。