问题补充:
(·高考四川卷)The airportnext year will help promote tourism in this area.
A. being completed
B. to be completed
C. completed
D. having been completed
答案:
A. being completed
B. to be completed
C. completed
D. having been completed
解析:选B。题干的意思是:明年竣工的飞机场将有助于促进该地旅游业的发展。complete与airport之间是动宾关系,又由题中的关键信息next year可知此处需用动词不定式的被动形式to be completed,表示将要发生的被动动作,所以B项符合题意。A项是现在分词的被动形式,表示正在进行的被动动作;C项是过去分词,表示已经完成的被动动作;D项是现在分词完成式的被动形式,表示已经完成的被动动作,三项均不合题意。