填空题


They are afraid that other people might find out ______.

【参考答案】

their mistakes
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填空题
What is the first problem______.
单项选择题
In the sentence In 1902 he secured a position as an examiner in the Swiss patent office in Bern. , the word secure probably means ______.
A．acquired
B．attached
C．closed
D．fastened
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