B11

Bubble gum is a type of chewing gum that is especially designed for blowing bubbles. It is ______ pink in colour and has a particular flavour.

USUAL

B12

In 1928 it was invented by Walter E. Diemer who worked for the Fleer Chewing Gum Company in Philadelphia. In his spare time Diemer was trying new gum recipes and, by accident, invented a ______ gum.

DIFFER

B13

It was less ______ than regular chewing gum and it stretched more easily.

STICK

B14

When Walter Diemer, who was 23 years old at that time, saw the bubbles, produced by his new gum, he saw the ______ of making money.

POSSIBLE

B15

He took the gum, which he had given the name Bubble Bubble, to the nearby grocery store and made a ______ to the salesmen to show the extraordinary features of his gum.

DEMONSTRATE

B16

The new gum was very ______ and popular with customers. Although Diemer never received a patent for his invention, he sold the recipe to his company and became a senior vice president.

SUCCESS