TOEFL Speaking practice questions in the real exam format and timing.
Using the example from the lecture, explain the concept of Circadian Rhythm.
Ví dụ về nhịp sinh học rất đời thường — dùng ngôn ngữ tự nhiên, không cần quá học thuật.
Record 90 seconds. You get four criteria, the exact words that slipped, and your own sentence rewritten two levels up.