Borromeo Li Ka-kit, 17 Shun Lee Catholic Secondary School The automobile. Imagine if today's society were not equipped with cars, we would have to ride a horse to travel. Now we can easily go hundreds of miles by car. It marks the phenomenal development of the human race. James Chim Wai-chiu, 17 Shun Lee Catholic Secondary School A few days ago, the salt water supply to my flat was cut. The inconvenience caused, and the bad smell released, made my family really depressed. It made me realise the world's greatest invention is the toilet. Kico Leung Chun-ying, 17 Christian & Missionary Alliance Sun Kei Secondary School The electricity generator is the world's greatest invention. All electrical appliances in the world need power to work. How do you make electricity? The generator is the key. Without a generator, electrical appliances cannot be turned on. Kinda Li Ka-tat, 15 Kwun Tong Maryknoll College The greatest invention in the world is drama. It's made up of art, education and entertainment and it is a way to express our feelings directly and share our stories with the audience. Drama is life, give it a try! Marvin Chung Man-Ting, 15 Wah Yan College, Hong Kong Computers, no doubt. Computers provide us with tremendous convenience and efficiency, which meet the high demands of today's world. They enable us to communicate and store data easily. The internet would never become a reality without computers. Rais Azad, 14 Delia Memorial School (Hip Wo) Love and respect. With love, everyone can do what they want. If you ask for help in rude way, people won't help. If you ask in a kind way, I'm sure they will. Wu Ping, 15 STFA Tam Pak Yu College The pencil is the world's greatest invention. With a pencil, you can draw pictures and write words to communicate, show your love and even keep your memories. Moreover, pencils are essential for scientists to create inventions and record their discoveries. Amy Siu Choi-hang, 17 SKH All Saints Middle School What is the world's greatest invention? Light? Transport? No, it's the computer. You can use a computer to finish work easily and quickly and it's fun. There are a lot of exciting and interesting computers games now so we don't need to play old-fashioned games anymore. Jacqueline Yiu Wan-yan, 16 Wa Ying College The internet is the world's greatest invention. Computer users in different countries can look for and exchange information. The internet also provides services, such as file transfer, electronic mail and newsgroups. It facilitates life! Mandy Lam Hiu-man, 16 Christian & Missionary Alliance Sun Kei Secondary School Humans are the best invention in the world. Humans create lots of miracles and have their own peculiarities. A human is a marvellous miracle. That's why I choose humans.