问题
选择题
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
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,….