should

should (http://definr.com/should)

     v 1: be expected to: "Parties should be fun"
     2: expresses an emotional, practical, or other reason for doing
        something: "You had better put on warm clothes"; "You
        should call your mother-in-law"; "The State ought to
        repair the bridges" [syn: had better, ought]
     3: be logically necessary [syn: ought, must, need]