(idiom) about to remember something
A: What’s the name of the capital city of Alaska?
B: I know, but I can’t remember.
A: Please, it’s important.
B: It’s on the tip of my tongue!
B: Got it! Juneau!
When Ryan’s teacher asked him to answer a difficult question, Ryan was frustrated because the answer was on the tip of his tongue, but he wasn’t able to remember it.
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