When Mara wheeled the donated bicycle into the repair room, the front wheel made a faint clicking sound. The tyre still looked fully inflated, so she spun the wheel slowly and watched the tread. On each turn, a thin piece of green glass caught the light near the valve. Mara marked the spot with chalk and released the air before removing the tyre. The inner tube had a short cut that matched the glass. The rest of the bicycle needed cleaning, but its chain and brakes worked properly.
What was embedded in the tread of the front tyre?
382 exam-style questions on WJEC GCSE English Language 3.1.3 Short and extended response question types. Each one has a worked solution and a mark scheme showing where the marks go.