In China's countryside, villagers often have the same family name, but ________ not be closely related.
A．needB．shall
C．mustD．may
D
考查情態(tài)動(dòng)詞。根據(jù)句意選擇D項(xiàng)，may意為“可能”，常常用于讓步狀語從句中。句意：在中國的農(nóng)村，村民們常常會(huì)姓同—個(gè)姓，但是可能不是近親，need“需要”；shall用于表示命令，威脅，警告，允諾，征求意見看法；must用于表示推測，意為“想必，一定”，也可以意為“非得，偏偏”，還可以用于表示勸諫，表示說話者主觀上認(rèn)為“應(yīng)該，必須”做某事。
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