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.
—— Have you considered _____ your job as a teacher? ——Yes. I like the job because a teacher is often considered _____ a gardener.
The monument was built in honor of the explorer who was believed _____ the river.
You will see this product made in this factory _____ wherever you go.
To answer correctly is more important than _____.