问题
选择题
Being physically examined for free twice a year is what every clerk _____ be ensured in any company
of the state. [ ]
A. must
B. ought to
C. shall
D. need
答案
答案：C
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Being physically examined for free twice a year is what every clerk _____ be ensured in any company
of the state. [ ]
A. must
B. ought to
C. shall
D. need
答案：C