At times the balance in nature is____, resulting in a number of possibly unforeseen effects.

We both strongly __________ your going to Iraq at this time of the war .It’s not a wise decision.

More and more rich people have promised to _____ their wealth after death to help the poor and the disabled.

The old woman is sitting_____________ her daughter.

Changing the design of a new product may ______ the risk of its production in the market.