Question

In our class there are 46 students, _____ half wear glasses.

A．in whom

B．in them

C．of whom

D．of them

Answer 1

C 

本題考查定語從句。前后兩句話之間無連詞，故不能用人稱代詞them
而應用關系代詞whom引導定語從句；在46個學生當中，表所屬，應用of。故答案選C。