law of time

law of time his spare time is made full use( )law.(of studing/of to stud the law of the law of diminishing returns A court of law subjects of international law law of identity是什么意思 law of 什么意思? principles of law是什么意思 sources of english law law of the 这句是什么意思?“The opening time of pubs is set by law.”谢谢