it's predicted that,by 2015,china (have) at least two Disneyland parks

问题描述:

it's predicted that,by 2015,china (have) at least two Disneyland parks
怎么填?为什么

will have had,将来完成时,指到2015的时候,中国将拥有至少...为什么要使用将来完成时指到将来的某个时候,已经怎么样.