﹣Most of the wild animals are _____because of their bad living environment．
﹣So we must do something to save them．（ ）
A．in needB．on dutyC．at workD．in danger
﹣Most of the wild animals are _____because of their bad living environment．
﹣So we must do something to save them．（ ）
A．in needB．on dutyC．at workD．in danger
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