____ is known to all, persistence is a kind of quality and that’s ____ it takes to do anything well.

Of the two speeches, I think the ______ was better.

—Shall I talk to Mr. White in English or in Chinese?—Do as you please.He knows       .

—How do you find your new classmates, Jim?—Most of them are nice to me, but ______is better to me than Rick.

I would appreciate ____ if you could pick me up at the airport tomorrow morning.