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In the classic series by L.G. Alexander, Lesson 21 of the second book, Practice and Progress , is titled " Mad or Not? " . Lesson 21: Mad or Not?

| Feature | Unverified/Bad | Verified/Good | | :--- | :--- | :--- | | | American or robotic | Standard Southern British English (Received Pronunciation) | | Opening Music | Faded or cut off | Distinct piano theme (Longman edition) | | Reading Speed | Too fast (robotic) | Slow, deliberate, 120-140 words per minute | | Sound Quality | Hissing, echo, clipped bits | Stereo or high-bitrate mono, no background hiss | | Lesson Title | Reads just the story | Reads "Lesson Twenty-One – Mad or Not?" before the story |

Lesson 21 likely contains a key structure (e.g., causative verbs or phrasal verbs). Listen to the audio while reading the "Summary Writing" exercise at the end of the lesson. Use the audio rhythm to time your paraphrasing.

And Progress Audio 21 Verified — New Concept English Practice

In the classic series by L.G. Alexander, Lesson 21 of the second book, Practice and Progress , is titled " Mad or Not? " . Lesson 21: Mad or Not?

| Feature | Unverified/Bad | Verified/Good | | :--- | :--- | :--- | | | American or robotic | Standard Southern British English (Received Pronunciation) | | Opening Music | Faded or cut off | Distinct piano theme (Longman edition) | | Reading Speed | Too fast (robotic) | Slow, deliberate, 120-140 words per minute | | Sound Quality | Hissing, echo, clipped bits | Stereo or high-bitrate mono, no background hiss | | Lesson Title | Reads just the story | Reads "Lesson Twenty-One – Mad or Not?" before the story | new concept english practice and progress audio 21 verified

Lesson 21 likely contains a key structure (e.g., causative verbs or phrasal verbs). Listen to the audio while reading the "Summary Writing" exercise at the end of the lesson. Use the audio rhythm to time your paraphrasing. In the classic series by L