几道定语从句选择题

几道定语从句选择题
1.The CCTV tower,___base is an electrial equipment shop,is requently visited by travelers.
A.which B.whose C.its D.that
2.It's a family of five,___are addicted to Internet.
A.all of them B.all of whom C.which D.those
3.---What would you do?
---I'd get a job doing something exciting,___I could meet interesting people and travel a lot.
A.where B.which C.when D.that
4.In the office I neber seem to have time until 5:30 p.m.,___many people have got home.
A.whose B.where C.on which D.by which
1.B
2.B（从句不是缺主语吗,为什么还用all of whom?）
3.A（为什么不用when?）
4.D（C与D有什么区别?）