Yang Liwei is a hero, but a _________. 

After a whole day’s hard work in the field, the old peasant went home, _____. 

I am _______ about what I say because careless remarks are likely to hurt others’ feelings.

—How did you like the lectures?—I thought they were________.

—Will you be _____ this afternoon, John?—It depends. I’m afraid I’ll be called in by my manager.