We are all looking forward the Great Wall during the National Day.
A. to visiting
B. to visit
C. for visiting
D. for a visit to
网友回答
(答案→)A. to visiting
B. to visit
C. for visiting
D. for a visit to
解析：考查动词短语。Look forward to doing sth;其中的to是介词，后面要接动名词。