----- Nội dung dịch tự động từ ảnh ----- 3. Put the verb in brackets in correct tense, active or passive.
Nylon - The first man made fiber (1. invent) ........................... chemist, Julian Hill. Other scientist (2. work) ........................... with his (3. introduce) ........................... to the world. It (4. become) ........................... a pair of (5. be) ........................... stockings. During the Second World War, the best present for many women (6. use) ........................... to make (7. find) ........................... in many things: carpets, ropes, sea (8. spare) ........................... parts for the human body. It (9. play) ........................... an important part in our lives for (10. manufacture) ........................... 36 million tons of it. Today, nylon beads, furniture, computer and even