__________satisfies the teacher is       the naughty boy is making progress in all his subjects．

She is very dear to us. We have been prepared to do _________ it takes to save her life.

—Did you return Fred's call?—I didn't need to ________ I'll see him tomorrow.

______ we think of Ben, we have to admit that he is a highly competent man.

The expert offered us another piece of advice,_____of great help to our program. 