【C2】A．whomB．whoC．whichD．what

【B15】A．WhichB．WhoC．WhenD．What

A．whomB．whoC．those

【C2】A．thatB．in whichC．whichD．what

【C15】A．whenB．whoC．thatD．what

The two tourists______I shared the room were both British.A．whomB．whoC．in whichD．with whom

【C3】A．thoseB．onesC．whichD．what