【C5】A．whichB．thatC．allD．what

I have no doubt ________ she will come.A、whichB、thatC、what

A．whichB．thatC．whereD．wherever

【C5】A．whichB．thatC．whatD．than

There are signs______the worst of the recession may be over.A．whichB．thatC．whyD．what

Tom told his father______ had happened.A．all whichB．thatC．all thatD．all what

We consider it necessary（)tom should improve his behavior.A. whichB. thatC. what