OTIVE Property. Exercise 9. These pairs of words are easily confused. Choose the best word for each sentence. 1. Travelling by bamboo copter is (simple/pimple). 2. I (new/knew) that she would come late as usual. 3. Travelling by hyperloop will (be/bee) faster than by airplane. 4. He was chosen to (lead/led) his group in this project. 5. Will (bullet/puppet) trains pollute the environment? 6. The cart before the horse is (neither/either) beautiful nor useful. 7. Making (something/anything) yourself is also more eco-friendly. 8. The car rocked slightly with a gust of (wind/windy). 9. SkyTran is a personal (rapid/rabbit) transit system concept. 10. Technology has made (us/we) ever more productive.