15 ways to say "I don't know" - Which one are you missing?

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Do you often say, "I don't know" in English? This English lesson teaches 15 natural English phrases for daily use to help you improve english speaking. You'll learn everyday english expressions, from casual to professional, to sound more natural.

Download my free 500 phrases e-book for more real-life English phrases... and join my Everyday English Speaking Course to learn these phrases in context and practice speaking!