All the people ____the meeting were very important

A.attending

B.present

C.attended

D.presented

答案及解析： A

本题考查非谓语动词。句中attending the meeting作定语，修饰All the people，之间为主动关系，故用现在分词，相当于“present at”，表示参加会议的所有人，故选A。