填空题


【参考答案】

open 改为 opening
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填空题
surrounding 改为 surroundings
单项选择题
A．For the completion of required assignments.B．For passing given examinations.C．For the good of gaining knowledge.D．For the sake of high grades.
A．For the completion of required assignments.
B．For passing given examinations.
C．For the good of gaining knowledge.
D．For the sake of high grades.
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