— What does the sign over there read?
—“No person __________ smoke or carry a lighted cigarette，cigar or pipe in this area.”
A．willB．may
C．shallD．must
C。
shall在陳述句中用于第二人稱和第三人稱時(shí)，可表示說話者的允諾、告誡、威脅、命令、規(guī)定、必然性等，如：You shall suffer for this. 你會(huì)為此事吃苦頭的。(表威脅) Tell him that he shall have the book tomorrow. 告訴他這本書明天給他。(表允諾) Persons under 18 shall not be employed in night work．不滿18歲的人不得雇傭干夜間工作。(表規(guī)定)
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