Expression: 'Keep your fingers crossed'

[Tom]

[Alan]

Hi Tom,

It's a sort of superstition that if you keep your fingers crossed then you will not fail or come to harm. People say: I'm keeping my fingers crossed for you when they want you to succeed in say taking an exam, applying for a job or taking your driving test.
A
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English as a Second Language
You can read my ESL story Present Simple

[Matian]

to fold one finger across another in the hope of bringing good luckwww.englishbyidioms.com