Choose the correct option to complete the sentences:

  1. I) I am familiar ______ that song.

  2. II) Were you aware ________ the regulations against smoking in this area?

  3. III) What John said is contrary _____ common sense.

  4. IV) This winter, Paul will be eligible _______ a three-week vacation.

  5. V) How do you account _____ this discrepancy?