(1) It's silly to go to the _____(费) of buying new clothes when you don't really need them.

(1) It's silly to go to the _____(费) of buying new clothes when you don't really need them.
(2) The new tax system would be _____(计算) on the value of property owned by an individual.
(3) Normally,people and animals are d______ are weak and unable to protect themselves from attack.