The prices of houses, ____________ is often reported, have been going up sharply in the past few months.

The prices of houses, ____________ is often reported, have been going up sharply in the past few months.

1. A.
   which
2. B.
   it
3. C.
   as
4. D.
   what

The prices of houses, ____________ is often reported, have been going up sharply in the past few months.

   A. which             B. it                        C. as                       D. what

The prices of houses, ________ is often reported, have been going up sharply in the past few months.

A．which          B．it          C．as        D．what

The prices of houses, ____________ is often reported, have been going up sharply in the past few months.