在遇到那个意外的机会后，他的命运发生了巨变。

His ___fortunes changed dramatically after the unexpected opportunity.

我们很幸运，旅行期间天气非常好。

We had the good ___fortune to have excellent weather during our trip.

他们都为她赢得奖学金的好运气感到高兴。

They all rejoiced at her good ___fortune in winning the scholarship.