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I never knew!

I want to (leave or left) some mark by commenting something here. p/s :- Someone made some post on Instagram, so I'm confused whether my comment up there is correct or not? 😅

Another quiz on modals!

Why don’t you think about the history of French fries a little while, and say “Yes, please. Thank you.” Am I supposed to add a question mark at the end of the sentence? How can I correct the punctuations in this sentence?

Choose the correct answer.