1. The world’s rain forests must be safe from ______destruction___________. ( DESTROY).
2. Major steps are being taken to control the _______pollution_________ of beaches. (POLLUTE)
3. Water conservation is ____necessary__________ for hydropower stations. (NECESSITATE)
4. People are _______constantly___________ doing harm to the environment. ( CONSTANT)
5. The giant panda is an __________endangered______species. (DANGER)
6. Doing this will waste a lot of ______valuable________time and effort. (VALUE)
7.We should pay attention to disturbing _____environmental______ influences. (ENVIRONMENT)
8.Several of the rioters were _______imprisoned_________ for causing the disturbance. (PRISON)
9.He stressed the need to pass a law in nature’s _______defence_________. (DEFEND)
10.The government has made no attempt to reduce soil _______erosion________. (ERODE)
11.Nearly 1,000 of the world’s bird species are ______threatened_________with extinction. (THREATEN)
12.Polluted air makes people ______unpleasant________ to breathe. ( PLEASE)
13.The fence _______collapsed________ during the storm. (COLLAPSE)
14.In the car accidennt he suffered severe ______injuries_________ to the head and arms. (INJURE)
15.After several flood, many families have become _____homeless_________. (HOME)
16.Tom found it hard to choose between the _______variety________offers of work. ( VARY)

1.The world’s rain forests must be safe from ________destruction_________. ( DESTROY).
2.Major steps are being taken to control the ________pollution________ of beaches. (POLLUTE)
3.ater conservation is ______necessary________ for hydropower stations. (NECESSITATE)
4.People are ________constantly__________ doing harm to the environment. ( CONSTANT)
5.The giant panda is an ________endangered________species. (DANGER)
6.Doing this will waste a lot of _______unvaluable_______time and effort. (VALUE)
7.We should pay attention to disturbing _______environmental________ influences. (ENVIRONMENT)
8.Several of the rioters were _______imprisoned_________ for causing the disturbance. (PRISON)
9.He stressed the need to pass a law in nature’s ________defence________. (DEFEND)
10.The government has made no attempt to reduce soil _______erosion________. (ERODE)
11.Nearly 1,000 of the world’s bird species are _______threatened________with extinction. (THREATEN)
12.Polluted air makes people _______ unpleasant_______ to breathe. ( PLEASE)
13.The fence _______ collapsed________ during the storm. (COLLAPSE)
14.In the car accidennt he suffered severe _______injuries________ to the head and arms. (INJURE)
15.After several flood, many families have become _______homeless_______. (HOME)
16.Tom found it hard to choose between the ________variety_______offers of work. ( VARY)