1. How long have you been reading this book?, 2. Have your friends been training for the competition?, 3. Why has she been laughing so much?, 4. What has your brother been cooking?, 5. Have you been trying to improve your English?, 6. How long have they been waiting for the bus?, 7. Why has he been wearing sunglasses?, 8. What have the children been doing outside?, 9. Has your teacher been giving you extra homework?, 10. Where have you been spending your weekends?

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