His new appointment takes _____ from the beginning of next month.

  —Nowadays the doctors are trying their best to reduce the people’s fear__________ they would be affected by the present disease called “Bird Flu （禽流感）”.

After the earthquake, the government turned a school into a      for the victims of the earthquake.

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

I keep medicines on the top shelf, out of the children’s       .