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As the saying goes, you ______ take a horse to the water, but you can't make it drink.
A、may
B、need
C、must
D、should
【正确答案】：A
【题目解析】：本题考查情态动词词义辨析。A.may：也许；B.need：需要；C.must:必须：D.:should：应该。根据题意，“正如谚语所说，你也许可以牵马到水边，却无法使它喝水。”只有A符合题意。答案为A。