Question

It is estimated that nearly 100 million people live here, most of ______ in the west.

1. A.
   which
2. B.
   whom
3. C.
   that
4. D.
   them

Answer 1

B
本题考查定语从句。句中先行词为100 million people，在定语从句中作most of的宾语，故选B。句意：据估计，大约有1亿人住这儿，大多数在西部。