问题补充:
When , the wholesale vegetable market will be the largest one in China.
A. completed
B. completing
C. to be completed
D. being completed
答案:
(答案→)A. completed
B. completing
C. to be completed
D. being completed
解析:考查非谓语动词。主句的主语the wholesale vegetable market与complete之间是被动关系,故排除B;连词when与不定式是不会一起使用的,故排除C;而D项表示正在被完成,故答案为A。等于When it is completed,….