摘要： Failure is the mother of success. Keep your courage. A. on B. out C. up D. up with
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Failure is the mother of success, please ______ your courage.
[
]A
．keep on B．keep up C．keep out D．keep up with 查看习题详情和答案>>Failure is the mother of success. ______ your courage and you’ll succeed.
A. Keep off B. Keep out C. Keep up D. Keep on
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