The big flood has caused great       to the local economies in Heilongjiang Province.

Is this your necklace, Mary? I____  it when I was cleaning the bathroom this morning.

The car salesman took the customer for a driver in the new model in order to _____ its improved features.

 —Do you know where my blue coat is ?—Don’t bother to look for it. I’m sure it will _______ some day.

It is a paradox（自相矛盾） that in      a rich country there should be     many poor people.