i tell you --- visiting the great wall.1,about something2,anyting_英语解答

i tell you --- visiting the great wall.1,about something2,anyting about 3,something about.
为什么要用visiting

人气：480 ℃　时间：2019-10-26 19:12:56

解答

3
about 是介词,介词后面加宾语必须加名词或动名词形式,所以用visiting