Solve it plz emergency

​QC. Fill in the blanks with suitable prepositions.

    1. His ego feeds ........................... flattery.

    2. Hard work is the key ....................... success.

    3. He is worthy ..............................praise.

    4. I have no patience .................... those who backbite.

    5. It's so cold, the city is enveloped ....................... a thick fog.

    6. He is addicted ........................... computer games.