【C14】A．whatB．whichC．whateverD．whichever

【B10】A．howeverB．wheneverC．whateverD．whichever

【C10】A．whatB．whichC．whereD．how

A．WhatB．WhichC．ItD．They

【C13】A．whatB．whichC．howD．that

A．whatB．whichC．thatD．since

【29】A．whatB．whichC．thatD．if