If you don’t try your best to learn all subjects, you will ___ behind.

 Reportedly on April 15, 2013 three people including a Chinese girl were killed in the Boston Marathon attacks when two bombs were _______, which shocked the whole world.

 He _______ me five dollars for it, but at first he said to me the work would be done ______.

_______ his own experiences in Italy, Mr. White created this famous novel.

His mother kept telling him to          his manners at the party.So he became impatient.