Scientists are increasingly _____ that the earth is getting hotter because of carbon dioxide and other gases. 

—John is very  ______ .—if he promises to do something he’ll do it.

Well, that’s just the deal. ______ price will be out of my reach.

—How was your recent trip to Sichuan?—I've never had ________ one before.

I don’t like it at all. It can’t be ______.