What word in ( ) fits?1. The out worn ideas of the past cannot be (rejuvenated,dilated) simply by expressing ?

them in snappy modern slang. 2. Today scientists smile wryly at the (preposterous,pugnacious) notion that the earth is flat. 3. We must clear away the (immunity,dross) of false ideas from our minds and take a long hard look ar reality. 4. Generally, (pugnacious,sterling) behavior on the football field is more effective in drawing penalties than in gaining ground. 5. As usual there are plenty of talkers, but the supply of doers is (flippant,sparse).