题目内容

Being physically examined for free twice a year is what every clerk _____ be ensured in any company of the
state.
[     ]
A. must
B. shall
C. ought to
D. need
B
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[     ]
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[     ]
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[     ]
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[     ]
A. I mustn't
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一 It _____ be Helen there. She has flown to London with her parents this morning.
[     ]
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