68. Read the passage, then answer the question:
Nowadays, our environment is in danger because some people do not care
about it. As a result, the problem is increasing. The question here is what ordinary
people can do to help protect the environment.
Question:Why is our environment in danger?
A. Because it is unpolluted.
B. So people do not care about it.
C. Because people do not care about it.
D. Because people protect it
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