“你们还有金枪鱼三明治吗？”“你运气真好——还剩最后一个。”

"Do you have any tuna sandwiches?" "You ___are ___in ___luck - there's one left."

我很走运，因为我的朋友住在同一区域，他有私家车，每天都可以让我搭便车。

I ___was ___in ___luck, because my friend, who lived in the same area, had his private car and gave me a lift every day.

在繁忙的节日期间，我们能在最后一刻找到一间酒店房间，真是走运。

We ___were ___in ___luck to find a hotel room at the last minute during the busy festival.