Before the final examination,many students have shown      of tension.Some have trouble in sleeping while others have lost their appetite(胃口).

None of them have regular and        source of income and forced to live below poverty line.

It doesn’t make ______ to buy that expensive  coat when these cheaper ones are just as good.

——-Shall we go out for a walk?——Sorry. This is not the right ____ to invite me. I am too tired to walk.

The young student is ____as a writer. It’s_____to all his teachers.