一个英语问题Herboyfriend'sfailure_____
Herboyfriend'sfailure_____hisworddistrubherverymuch.A: :ofkeepingD;forkeeping答案:Awhy?
某人未能做某事，英语通常的表达是...to fali to do sth；当其中的fail名词化为failure时，其后的to do sth不变。