根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。
HowandWhattoStudyBeforeExam
Studyforanapproachingexam．Studyinghardforafewdayscanbetiring,butitalwayspaysoff!Mostpeopleclearlyrecallthefeartheyfeltwhentheyrealizedthatanexamwasdrawingnear．Ifyou’reinthissituation,don’tworry．Manypeoplehaveproventhatthereisstillenoughtimetostudy,ifyoudoitproperly．Herearesomestrategiestohelpyou．
 1   Fearwillonlymakeyoursituationworse．Ifyouarefocusingonthehorror,notontheknowledgeofanexam,youaremorefrightened．Itiscertainthatyoucan’tdowellintheexam．Ifyouarenervous,takedeepbreaths,keepcalmandfindyourselfstrategiestohelpyou．
 2    Examsusuallycoverafewmainideas,concepts,orskills．Whenyouareshortoftime,focusyourenergiesonthekeyareas．Reviewthehighlightedtopicsintextbooksandthepartsyourteacherstressedrepeatedly．  3  
Determinewhatsubjectsyoudon’tknowenoughandarenotclearabout． 4   Thepartsyouknowmoreaboutstillneedreviewing,buttheywillcometoyoumoreeasily．Sotrytofocusonthemorechallengingtopics． 
Studyingtogethercanbehelpful．Youdon’tgetextrapointsfordoingitalone．Classmatescanbehelpfulinstudying,andchoosesomeonewhowillbeabletohelpyou．Askforhelpfromyourparents,brothersorsisters． 5    Fromastudygroup,notonlydoyouhaveadditionalhelp,youalsohavetheadvantageofstudyingwithpeopleyouknowwell．