________you’ve got a precious chance, you might as well make full use of it.[ ]

Many people claim that they have seen UFO with their own eyes, _____ I personally doubt

John, _______ university professor, is considered to be _______ success as ______ expert in the agriculture research.

We call her XiWang. What kind of sentence structure is it

Dad’s old computer was________ expensive ________ repair，so he bought a new one.