Decision makers must have some way of determining of several alternatives is best.（）

I'dappreciateitverymuchifyoucouldmakesome________onmyrecentarticleattheconference.

The United States is a country_ (advance) in science and technology

Mrs.Weinsteinbravelyandpersistentlyusedeveryskillandpowershehadtoherattackertosimplytakehercarandnotherlife.

Mrs. Weinstein bravely and persistently used every skill and power she had to her attacker to simply take her car and not her life.