【C15】A．thatB．somethingC．whichD．nothing

【C19】A．thatB．thisC．whichD．what

【C2】A．thatB．in whichC．whichD．what

Its not______I enjoy; I do it purely out of a sense of duty.A．anythingB．somethingC．nothing

A．so thatB．in order toC．whichD．that

【C6】A．thatB．asC．whichD．as that

【C5】A．thatB．thisC．whichD．it