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The other day, my father drove his car at ________ I thought was a dangerous speed.

A．as 

B．that

C．which 

D．what

—How are you getting along with your project?

—I was about to give up when an idea occurred to me ________ I could work with my roommate Tim.

A．that 

B．how

C．why  

D．whether

So far all cloned animals have suffered from some different serious disorders, ________ dying soon after birth.

A．many of which 

B．many of whom

C．many of them 

D．many of that

At the evening party the host said________ was able to solve the riddle could get a nice present as a reward.

A．whoever

B．who

C．no matter who

D．whomever

The problem will appear ________ a different welfare system will be created.

A．unless 

B．whether

C．until 

D．if

________ comes will be welcome to the open­air concert.

A．Whatever 

B．Whoever

C．No matter what 

D．No matter who

________ is known to us all is that the Chinese government has spared no efforts to protect people from fake food.

A．As　　　

B．It 

C．That　　

D．What

When you rewrite the paragraph, I advise you to leave out ________ is thought unnecessary or misleading.

A．what　　　

B．that 

C．these　　　

D．which

I persuaded my parents ________ we should go to Italy for a holiday rather than Scotland.

A．what 

B．that

C．where 

D．how

—Why do you think the film star is getting less popular?

—I guess the way she wears is ________ annoys her fans most.

A．which 

B．where

C．how 

D．what