此动作发生在过去，故应该使用一般过去时

【题目】阅读下面材料， 在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

David was eating something at home __【1】___ he received a strange phone call from a hospital.The caller said that his son had fallen to ground unconscious on the way to school.It was he _【2】took him to the hospital.David hung up his cell phone and rushed to his son’s classroom, only ___【3】_(find) him listening to the teacher attentively.He suddenly realized that he had been cheated.Just at that time the phone ___【4】__ (ring) again, saying, “ Your son is _【5】_ (terrible) injured and he needs ____【6】___ immediate operation which costs 48000 yuan.The doctors here say they will not operate___【7】__your son until they receive the money.” When _【8】_( ask) from where the caller had taken his son to hospital, the caller rang off.

If the cheater thought he could get money from David in such a __【9】___(honest) way, he was wrong.Such phone calls are common these days.Some parents might have fallen victims to such tricks.Most of the parents are sensitive to __【10】____.It was really silly to cheat well-educated men like David.