【C20】A．in thatB．for whichC．with whomD．by whom

A．thatB．whichC．whomD．what

The plane______we flew to Canada is very comfortable.A．in thatB．in whichC．whatD．/

【C2】A．thatB．in whichC．whichD．what

It is unlikely ____ the world energy will last forever.A: thatB: whichC: becauseD: for

I have done everything _____ I can do for you .A.thatB.whichC.whatD.whatever

Liquids are like solids ______ they have a definite volume.A.in thatB.for thatC.with thatD