Fill in the Blanks (Reading & Writing)

Traditionally, glassblowing skills were passed on through a lengthy apprenticeship rather than —formal instructionformally instructedformal instructsformality instruction in a classroom. A novice would spend years observing a master, gradually —beingbeento beis allowed to shape simple pieces before attempting anything delicate. This slow progression ensured that —carelesscarelesslycarelessnesscareful habits, such as misjudging the temperature of molten glass, were corrected long before they became dangerous.