Holiday is ---a---time for leisure.But making good use of ---the---time is not an easy taskfor most people.为啥?

问题描述:

Holiday is ---a---time for leisure.But making good use of ---the---time is not an easy task
for most people.
为啥?

the 代之特定的某物 这里指前文提到的holiday
a 指不定的某物 假日是很多的 不能特指一个