This machine must not be used after 5.30 p.m.
A. You can't use the machine after 5.30 p.m.
B. You mayn't use the machine after 5.30 p.m.
C. You need not use the machine after 5.30 p.m.
D. You must not use the machine after 5.30 p.m.
Answer: Option D
Solution (By Examveda Team)
You must not use the machine after 5.30 p.m.The given sentence contains one of Model verb (Model Verb = will, shall, can, may, might, could, might, must, would). It is in passive voice.
Rule :
Subject + Model verb + V1 + Optional Objects

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