She looks forward to the Great WallA. visitB. visitsC. visitedD. visiting

问题补充：

She looks forward to the Great Wall

A. visit

B. visits

C. visited

D. visiting

答案：

A. visit

B. visits

C. visited

(答案→)D. visiting

解析：考查固定搭配。look forward to doing sth.“期望做某事”，to是介词，后加名词、代词、动名词。句意“她期望着去参观长城。”故选D。