大学生英文版在读证明:Brain Teasers:What does everyone have and overlook？

Brain teasers： What can pierce ones ears without a hole? Brain Teasers:What number is like a peacock？ Brain Teasers:What grows sharper the more it’s used？ Brain Teasers:What has a mouth but never speaks？？？ Brain Teasers:What does everyone have and overlook？ Brain Teasers 2 Brain Teasers 3 Brain Teasers 8 Brain Teasers 7 Brain Teasers 4