sentences:  Audiences polled by CinemaScore gave the film an average grade of "B+" on an A+ to F scale, the same score earned by the first two films.Roger Ebert gave the film 3 out of 4 stars, in particular praising Brolin's role as the young Agent K, which he cited as an excellent example of good casting.Ebert also praised the "ingenious plot, bizarre monsters, audacious cliff-hanging" and the "virtuoso final sequence."