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Listen to a woman talking about school start times for teenagers.

Part 3 – Bài nói, bài giảng

Luyện tập · không tính giờĐã làm 0/5 câu
  1. 1. What did a group of American doctors recommend in 2014?
  2. 2. Why do teenagers find it hard to learn early in the morning?
  3. 3. What happened at schools that started later?
  4. 4. Which is NOT a problem mentioned by people who disagree?
  5. 5. What happened in California in 2019?