【C4】A．whatB．thatC．whichD．where

【C12】A．whatB．whyC．whichD．that

【C6】A．thisB．thatC．whichD．whose

This hospital is______provides the best services in the city.A．whatB．thatC．one whichD．the

【C3】A．whatB．thatC．whichD．it

_____ the moon moves round the earth is well known to all of us .A.WhatB.ThatC.WhichD

I was sure __________ I would overcome all these difficulties.A.whatB.thatC.whichD.whet