题目内容
It was said that Osama bin Laden ______ to attack four cities of America beforehe died.
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The researchers are already working with food companies keen to see if their products can be made ______ to bacterial attack through alterations to the food's structure.
Finally, other people may give us instrumental supports—financial aid, material resources, and needed services—that can help us ______ and cope with our problems.
The society was set up to ______ endangered species from extinction.
They were imprisoned and ______of their basic rights.
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