你认为婚姻有可能发生吗？

Do you think marriage ___is ___on ___the ___cards?

项目成功后，她升职的可能性很大。

A promotion ___is ___on ___the ___cards for her after the successful project.

鉴于当前趋势，政策改变很可能发生。

Given the current trends, a change in policy ___is ___on ___the ___cards.