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1.tv is a (medium/media)of advertizing.2.the floods brought a(crisis/crises)for the farmers.3.the(curriculum/curricula)of the college should be revised.4.he is a former (alumnus/alumna)of a prestigious university.5.use(parenthesis/parantheses)to explain these(pheomena/phenomenon).6.archeological doscoveries strenghtened the (hypothesis/hypotheses)that Troy existed.7.they belong to quite diggerent (stratum/strata)of society.8.are they (alumna/alumnae)of the same university?9.What if the(diagnoses/diagnosis)is not correct?10.the(syllabus/sillabi)for this subject has not been developed yet.