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.

After marriage, the world-famous man, who was a leading role in physics, decided to give up his wife ________ his career（事业）.

Don’t worry. I’m sure you’ll succeed _______ if you work hard.

I will never understand how it ______ that you failed in the examination for you are such a good student.

When seeing the snake, she       a scream.

      win the competition, she devoted herself to getting ready for it.

After a long and tiring trip, I am       a warm bath and delicious meal.

His son’s excellent work      his rise in the company, while her daughter’s laziness     her failure