用cast down,cast away,cast off,cast out,cast about/around for的适当形式填空.

 ① Finding out the truth made Tom__________.

 ②She's__________three boyfriends in a week.

 ③They were_________on a desert island.

 ④He___________hurriedly__________for something to say.

 ⑤He claimed to have the power__________the enemy.