摘要： A. made
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A sofa made of leather is much more expensive than ________ made of cloth．
- A.one
- B.that
- C.it
- D.those
A ________ of murders made the police run here and there, but no murderer was caught．
- A.series
- B.numbers
- C.amount
- D.set
A new material of which water pipes are made has already ________ steel or iron in industry．
- A.controlled
- B.rebuilt
- C.placed
- D.replaced