what's the change of --------a general election this year?A.

A.there being
原句后面是there be 句型.
整个加在of 后面,介词后面,自然就应该用being,分词形式.
what's the change （for there） to be a general election this year?
=what's the change to be a general election this year （there）?
这句结构与上句不同.
to be 这里相当于to have
再问： 谢谢，能不能问你另外一个问题，就是chance有没有这个用法：there is a chance for to do sth
再答： 有的 Now there is a chance for you to show yourself up. there is no chance for her to open her English book.