单项选择题

You have to make sure that you have chosen a secure solution.

A. clear
B. secret
C. advisable
D. safe
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单项选择题
The man has acquired an important status in this company.
A. caught
B. attached
C. compressed
D. obtained
单项选择题
They have the capability to complete the task in a week.
A. possibility
B. competence
C. courage
D. mixture
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