gấp ----- Nội dung dịch tự động từ ảnh ----- Exercise 9. These pairs of words are easily confused. Choose the best word for each sentence. 1. Teenagers are often (been / seen) as moody and unpredictable. 2. They are also known (for / four) their energy and enthusiasm. 3. Teenagers are often very social and enjoy (spend / spending) time with friends. 4. They can be very (create / creative) and have a lot of ideas. 5. Teenagers are often very (curious / furious) and enjoy learning new things.