The right verb

{"params":{"content":{"task":"<p>Match each explanation (A\u2013F) with the correct verb phrase.<\/p>\n","blanksList":[{"correctAnswerText":"back something up"},{"correctAnswerText":"play hardball (with somebody)"},{"correctAnswerText":"pull something off"},{"correctAnswerText":"stand one\u2019s ground"},{"correctAnswerText":"take something on"},{"correctAnswerText":"turn something down"}],"blanksText":"<p><strong>A.<\/strong> support something<br>\n<span>_________<\/span><\/p>\n\n<p><strong>B.<\/strong> be firm and determined in order to get what you want<br>\n<span>_________<\/span><\/p>\n\n<p><strong>C.<\/strong> succeed in doing something difficult<br>\n<span>_________<\/span><\/p>\n\n<p><strong>D.<\/strong> not retreat or lose one\u2019s advantage in the face of opposition<br>\n<span>_________<\/span><\/p>\n\n<p><strong>E.<\/strong> accept a particular job or responsibility<br>\n<span>_________<\/span><\/p>\n\n<p><strong>F. <\/strong>refuse to accept or agree to something<br>\n<span>_________<\/span><\/p>\n"},"overallFeedback":[{"from":0,"to":100}],"behaviour":{"mode":"selection","selectAlternatives":"all","selectAlternativeRestriction":0,"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"}},"metadata":{"title":"Definitions","license":"U"}},