单项选择题

Certainly man must () the future, and find ways of providing for his use.

A. look to
B. look up
C. look for
D. look on

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You must () yourself, or they will continue to bully you, so you will go on living in disgrace.

A. promote
B. strengthen
C. assert
D. assess
单项选择题
Although she was still ill, she () herself from the hospital.

A. extracted
B. discharged
C. injected
D. drained
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