A step-by-step approach

{"content":{"task":"<p>Choose the correct option to complete each sentence by using the drop-box menu.&lt;\/p&gt;\n","blanksList":[{"correctAnswerText":"glitch","incorrectAnswersList":[{"showHighlight":false,"highlight":"-1","incorrectAnswerText":"glitz","incorrectAnswerFeedback":""}]},{"correctAnswerText":"matter-of-fact","incorrectAnswersList":[{"showHighlight":false,"highlight":"-1","incorrectAnswerText":"matter-of-factly","incorrectAnswerFeedback":""}]},{"correctAnswerText":"back up","incorrectAnswersList":[{"showHighlight":false,"highlight":"-1","incorrectAnswerText":"back down","incorrectAnswerFeedback":""}]},{"correctAnswerText":"apologize","incorrectAnswersList":[{"showHighlight":false,"highlight":"-1","incorrectAnswerText":"excuse","incorrectAnswerFeedback":""}]},{"incorrectAnswersList":[{"showHighlight":false,"highlight":"-1","incorrectAnswerText":"stickier","incorrectAnswerFeedback":""}],"correctAnswerText":"trickier"}],"blanksText":"</p><p>A. Before complaining, it\u2019s important to consider whether the problem is simply a minor __________ and not worth jeopardizing a business relationship over.&lt;\/p&gt;\n\n</p><p>B. When writing a letter (or email) of complaint, write in a formal, polite and __________ way.&lt;\/p&gt;\n\n</p><p>C. Include evidence in your letter or email to __________ your complaint.&lt;\/p&gt;\n\n</p><p>D. There\u2019s no need to __________ for complaining. You are giving your business partner important feedback.&lt;\/p&gt;\n\n</p><p>E. Complaining about poor customer service is __________, as you probably won\u2019t have any evidence of how you were treated.&lt;\/p&gt;\n"},"overallFeedback":[{"from":0,"to":100}],"behaviour":{"mode":"selection","selectAlternatives":"alternatives","selectAlternativeRestriction":5,"spellingErrorBehaviour":"mistake","caseSensitive":false,"autoCheck":false,"enableSolutionsButton":true,"showSolutionsRequiresInput":false,"enableRetry":true,"enableCheckButton":true,"disableImageZooming":false,"confirmCheckDialog":false,"confirmRetryDialog":false},"showSolutions":"L\u00f6sung anzeigen","tryAgain":"Wiederholen","checkAnswer":"\u00dcberpr\u00fcfen","notFilledOut":"Bitte f\u00fclle alle L\u00fccken aus, um die L\u00f6sung zu sehen","tipLabel":"Tipp","spellingMistakeWarning":"\u00dcberpr\u00fcfe die Rechtschreibung: @mistake","scoreBarLabel":"Du hast :num von :total Punkten erreicht.","confirmCheck":{"header":"Beenden?","body":"Ganz sicher beenden?","cancelLabel":"Abbrechen","confirmLabel":"Beenden"},"confirmRetry":{"header":"Wiederholen?","body":"Ganz sicher wiederholen?","cancelLabel":"Abbrechen","confirmLabel":"Best\u00e4tigen"},"media":{"params":{}}},</p>