Circle the correct answer1. The plane ____ showed the passengers what

Circle the correct answer
1. The plane ____ showed the passengers what to do in case of an emergency.
A. team B. staff C. crew
2. The terrible fire left bildings ___ ruins.
A. On B. In C. By
3. Cars and factories produce toxic ____ that harm the eviroment.
A. Fog B. Fumes C. Flames