Exercise 3. b: What is this? 1. A road vehicle with an engine and four wheels that can carry a small number of passengers. What’s this? It’s a/ an 2. A road vehicle with two wheels that you ride by pushing the pedals with your feet. What’s this? It’s a/ an 3. A flying vehicle with wings and one or more engines. What’s this? It’s a/ an 4. A road vehicle with two wheels, driven by an engine. What’s this? It’s a/ an 5. A large vehicle for carrying heavy loads by road. What’s this? It’s a/ an