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I can’t agree morE. Do you think so? Are you serious? You must be joking!
mustn’t can’t needn’t shouldn’t
hand in; forgot hand in; left hand out; forgot hand out; left
must have been had to be was to be must be
mustn’t;should can’t;must mustn’t;may needn’t;can
must; must may; have to might; must could; have to
could do would do could have done must have done
hand in; rings hand in; will ring be handed in; will ring be handed in: rings
Yes,you must No,you needn't Y
needn’t mustn’t must need
mustn’t; should can’t;must mustn’t;may needn’;can
could do would do could have done must have done
needn’t, hand mustn’t, to hand in needn’t, hand in mustn’t, hand in
May, must Must, may Must, may Must, must
hand in; rings hand in; will ring be handed in; will ring be handed in; rings
to home home my home his home
must have been had to be was to be must be