1．Describe to your partner what might happen ________ the objects in the photos.
2．Imagine your home begins to shake and you must leave it right ________.
3．A smelly gas came out ________ the cracks.
4．________ about 3∶00 am ________ July 28,1976，some people saw bright lights ________ the sky.
5．Steam burst ________ holes ________ the ground.
6．________ fifteen terrible seconds a large city lay ________ ruins.
7．Bricks covered the ground ________ red autumn leaves.No wind，however，could blow them ________.
8．The army organized teams to dig ________ those who were trapped and to bury the dead.
9．________ the north of the city，most of the 10,000 miners were rescued ________ the coal mines there.
10．Fresh water was taken ________ the city ________ train，truck and plane.
