We are all looking forward the Great Wall during the National Day.A. to visitingB. to vis

问题补充：

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

答案：

(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。