thomas adams d____bubble gum in the 1870s文章

Thomas Adams discovered bubble gum(泡泡糖) in the l870s. He was an American. He wanted to find a use for chicle(糖胶树胶). Chicle is a Spanish word for sticky(粘的) water that comes from one kind of Mexican tree. Mr Adams wanted to make rubber(橡胶) from chicle.
Mr Adams worked in his home while he tried to find a way to make the chicle stronger. His son, Horatio, also helped him now and then.
One day, young Horatio began to chew the chicle while he watched his father work. It did not taste very good, but Horatio enjoyed chewing it. Then the young boy began to blow(吹) bubbles with the new chicle which his father had made(已做). Mr Adams had discovered(已发现) bubble gum by accident(偶然地).
Mr Adams gave up trying to find a way to make rubber from chicle. Instead, he wanted to try and sell the new gum that he had made. He thought other people might like the taste(味道)， too.
He began to see his new kind of chicle as candy. In no time, children everywhere began chewing bubble gum.

Thomas Adams 1.________ bubble gum(泡泡糖) in the l870s. He was an American. He wanted to find a use for chicle(糖胶树胶). Chicle is a Spanish word for sticky(粘的) water that comes from one kind of Mexican tree. Mr Adams wanted to make rubber(橡胶) from chicle.
One day Mr Adams worked in his home His son, Horatio, also helped him . Young Horatio began to chew the chicle while he watched his father work. It did not taste very good, but Horatio enjoyed 2._______ it. Then the boy began to blow(吹) bubbles with the new chicle which his father had made(已做). Mr Adams discovered(已发现) bubble gum by 3._______
Mr Adams stopped trying to find a way to make rubber from chicle. 4.______ he began to make bubble gum and sell it to other people.He thought other people might like the taste(味道)， too.
soon childen everywhere 5.______ chewing bubble gum.
1.discovered
2.chewing
3.accident
4.Instead
5.began

discovered