When she heard the sad news of her family, the lady____.

You might            those fireworks, Jane. Do be careful with them.

  The school principal himself ________ a prize in English to the best student at the opening ceremony.

Armed police and railway workers were removing snow from the track to _______ a train stuck near Jining in Inner Mongolia.

Under the new schedule, school teachers must ______each class on time, instead of adding extra lessons.