—Tony, you must have noticed the student who broke the window. —I’m sorry. I _______ attentivel...

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didn't you did you haven't you have you

Must; doesn’t have to Do; don’t have to Must; don’t have to Must; mustn’t

didn’t; must have been playing didn’t; must be playing couldn’t; must have played couldn’t; must be playing

Must; doesn’t have to Do; don’t have to 　　 Must; don’t have to Must; mustn’t

have you did you haven’t you didn’t you

studied was studying am studying would study

must say should say must have said should have said

mustn’t；can needn’t；must don’t have to；may can’t have to；may

didn't; must be playing couldn't; must be playing couldn't; must have played didn't; must have been playing

studied was studying am studying would study

must, mustn’t must , don’t have to may, needn’t may , mustn’t

you must there’s no need you needn’t have you needn’t to

have to, may be, may needn’t, must have to, must

can；being read must；to be read may；reading must；reading

have you did you haven’t you didn’t you

do; don’t have to do; mustn’t must; don’t have to must; mustn’t

mustn’t; must mustn’t; may needn’t ; may don’t have to; must

must mustn't have to don't have to

mustn’t; may may not; must　　 don’t have to; may shouldn’t; must