Question

i'll come and see you in london ,() the

Answer 1

应该是：

I'll come and see you in London, given the chance.

如果我得到这次机会,就会来伦敦看你.

given the chance(=if I am given the chance)是过去分词短语作条件状语（表被动）,相当于被动语态的条件状语从句.