题目内容：
根据以下材料，回答题
WhatShouldISaytothePersonWhoHasCancer?
Itisnormaltofeelthatyoudon'tknowwhattosaytosomeonewhohascancer.Youmightonlyknowthepersoncasually,oryoumayhaveworked（1）orlivedneareachotherformanyyearsandhaveacloserrelationshipThemostimportant（2）youcandoistoacknowledgethesituationinsomeway-whateverismostcomfortableforyou.Youcanshowinterestandconcern,youcanexpressencouragement,oryou（3）offersupport.Sometimesthesimplestexpressionsofconcernarethe（4）meaningful.
Whileitisgoodtobeencouraging,itisalsoimportant（5）toshowfalseoptimismortotellthepersonwithcancertoalwayshaveapositiveattitude.Doing（6）thingsmaydiscounttheirfears,concerns,orsadfeelings.Itisalsotemptingtosaythatyouknow（7）thepersonfeels.Whileyoumayknowthisisadifficulttime,noonecanknowexactlyhowthepersonwith（8）feels.
Humorcanbeanimportantway（9）coping.Itisalsoanothersourceofsupportandencouragement.Letthepersonwithcancer（10）thelead;itishealthyiftheyfindsomethingfunnyaboutasideeffect,likehairlossorincreasedappetite,andyoucancertainlyjoin（11）inagoodlaugh.Thiscanbeagreatwaytorelievestressandtotakeabreakfromthe（12）seriousnatureofthesituation.
Whenthepersonwithcancerlooksgood,letthemknow!Refrain(忍住)（13）commentswhentheirappearanceisn'tasgood.suchas"You'relookingpale"or"You'velostweight".Canceranditstreatmentcanbeveryunpredictable.Bepreparedforgooddaysandbad（14）Refrainfromtellingthepersonwithcancerstoriesaboutfamilymembersorfriendswhohavehadcancer.Everyoneisdifferent,andthesestoriesmaynotbehelpful.Instead,itisbettersimplytotellthemyouknow（15）aboutcancerbecauseyou'vebeenthroughitwithsomeoneelse.
回答(1)题 A．hard
B．together
C．often
D．once
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答案解析：