“Facial transplants are no longer science fiction imagination ,”a surgeon has said,____that they are ___possible but  technically complex..

The incomes of skilled workers went up. ______, unskilled workers saw their earnings fall.

It turned out that his pulse beats ____ , which made us relieved.

.If what your friend comes up with surprises you，don't reject it immediately._____，imagine that it is true.

Most of the fans felt rather disappointed at the concert. They said it could have been _______ organized.