I am keeping my fingers crossed

When was the last time you took a test? Was it a breeze? Or was it a tough nut to crack? Last Sunday I took a test (Yes, even teachers take tests sometimes). It was a six-hour testathon. The test was excruciatingly difficult. However I hope I pass and I am keeping my fingers crossed. Results come out in 7 weeks.

*in a breeze
簡単｛かんたん｝に

*pass an exam in a breeze
楽々と試験にパスする

*That's a breeze.
そんなの楽な仕事さ.

tough nut to crack
《a ～》割れにくい木の実、難問題｛なんもんだい｝、難物｛なんぶつ｝、扱いにくい人・He is a hard [tough] nut to crack and will never tell me the truth about what he did last week. :
彼は難しい人で、先週何をしていたか、本当のことを決して言わない。

This problem is a tough nut to crack, but we'll be able to solve it somehow.
これは難題だが、何とか解決できるだろう。

I don't know if I even have a chance, but I'm keeping my fingers crossed.
私にチャンスがあるのかどうか分からないが、うまくいくように願っている。