I am thinking about ___to spend my summer holidays

题目

I am thinking about ___to spend my summer holidays
A.who B.what C.where D.which
可是where为什么能当主语用啊
The boy wiht ___I went to the concert yester day evening was late for school
A.that B.who C.whom D.whose
这句话怎么判断啊

答案

where引导的非谓语动词短语作整个句子的宾语
where不是主语,你好好看看非谓语动词吧...
C
可以反过来说：I with the boy...theboy 作宾语,当然定语从句要用whom引导