【C20】A．whoseB．thatC．whichD．what

【C12】A．whetherB．thatC．whichD．why

【C4】A．whatB．thatC．whichD．where

We must find a house _______ to live.A: whichB: thatC: in whichD: in that

【C6】A．thisB．thatC．whichD．whose

【C7】A．whereB．thatC．whichD．wherever

【C3】A．whatB．thatC．whichD．it