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

It was __    _ that he had to ask for help.

In order to keep fit，you will take exercise_________ and eat healthily．

The poor boy couldn't work the problem out. He wasn't ____ clever.

. ---You don’t seem to be quite yourself today. What’s wrong? --- Oh, I'm suffering from a cold. Nothing serious, ____.