1.Charlie Chaplin,for ---- life was hard,began acting at the

1.Charlie Chaplin,for ____ life was hard,began acting at the age of five.A.who B.whom C.whose D.his2.Charlie Chaplin,____ life was hard,began acting at the age of five.A.who \x05B.whom \x05C.whose \x05D.his 这两题如何区分?特别是第一题,为啥选择B,介词后面也可以加whose的吧!