【高一英语从句关于the的详解Hewastheonlyoneoftheboyswho()lateforschool.A.areB.wasC.wereD.isHEwasoneoftheboyswho()lateforschool.A.areB.isC.wereD.was求这两题详解,关于the加进去句子变了什么的】

　　高一英语从句关于the的详解

　　Hewastheonlyoneoftheboyswho( )lateforschool.

　　A.are B.was C.were D.is

　　HEwasoneoftheboyswho( )lateforschool.

　　A.are B.is C.were D.was

　　求这两题详解,关于the加进去句子变了什么的详解.