I wasthat there were about 50 foreign told students--Chinese

I wasthat there were about 50 foreign told students__Chinese in the school,most__were from Germany
A.study;of whom B.study;of them C.studying;of them D.studing;of whom
谢谢了．．．

study的逻辑主语是students,为主动关系,所以此处用studing做定语.
第二空不太会解答,但如果用most of them,则most...这句应另为一句,
m得大写.或者most前加and.