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At mosphere，damage，chemical，dig，dust，environment，
situation，forecast，survive，process
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1.A ______ change takes place in any substance when it burns.
2.The ______of the city is very much polluted.
3.We shall have to ______under the river to lay the sewage pipe.
4.The general ______of the development of the China’s is greatly encouraging.
5.The firm is now in the ______of moving the main equipment to a new place.
6.A torrent of rain came down and ______the crops.
7.The teacher ______ that twenty of his pupils would pass the examination.
8.In the summer the town becomes very ______.
9.Only two passengers ______ the air-crash.
10.Those small factories are causing a lot of ______pollution with all their noise and smoke.
