This is a city which lives for today while by its past.
A. surround
B. surrounding
C. surrounded
D. to surround
网友回答
A. surround
B. surrounding
C. surrounded
D. to surround
解析： 考查非谓语动词。while在这里表转折意义，有“然而”之意，surround一词是及物动词，be surrounded by被……包围，这里是状语从句的省略，省略了it is。