Both are modal auxiliaries and should is not just the past of shall.
Here is a good explanation: https://learningenglish.voanews.com/a/everyday-grammar-should-vs-shall/3107315.html
How can I learn German languages
Hallo Leute , ich möchte mein deutsche Sprache verbessern.
Me he quedado en blanco
Guys I need an essay in german about how I spent my summer vacation
I wonder if there is another way to say 'bandwidth'?
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