🙂 As users, passengers wanted 1 travel, so jet 2 engines were developed.
💺 They also wanted more 3, leading to better seats and 4.
🎬 Many also wanted entertainment, so 5 and 6 were added.
😬 In the past, people used 7 or just threw 8 into the streets.
🤢 It was 9 and spreading 10.
🧠 The invention of 11 allowed toilets to connect to underground 12.
💧 It could 13 waste away 14 and 15.
👍 It improved 16, hygiene, and made toilets more 17 to use.