Afterthe Great Wall the visitors from Britain went to the Summer Palace.A. visitB. visits

问题补充：

Afterthe Great Wall, the visitors from Britain went to the Summer Palace.

A. visit

B. visits

C. to visit

D. visiting

答案：

A. visit

B. visits

C. to visit

(答案→)D. visiting

解析：本题中after是介词，后面接名词或者动名词作宾语，故选D，在参观长城后……。