We live too far from the city to get a strong TV ________.

The advice is of great ________ to our work. We all think it ________.

I am writing to express my _______ for the safety of children travelling on school buses, especially those on high-risk and highway-speed routes.

Hard work is no ____ of an excellent school report record.Your have to adopt a    flexible approach to your learning.

---What’s the chief ______ of the world this year?---I think the Twin- Tower was destroyed.