Tom’s little sister is a girl of great _______. She takes an interest in everything.

The passengers should wait in ________ when they want to get on the plane.

—Hi,Magarette! You are in perfect        .—I always do exercise to keep fit.

A study shows that walking fast in your old age is a ______ that you will live a long life.

Teachers have to constantly update their knowledge in order to maintain their professional ___.