1 . ______ is surprising to us is that Tom, for _______ English was once boring, can speak English fluently as though he were a native speaker.

A．As; whom	B．What; whose
C．It; whose	D．What; whom

2 . There are many new central leaders in China now, ________ many once worked in the western provinces.

A．in which	B．of whom
C．in whom	D．for whom