单选题 Could you please tell Mr. Parsons that I tried to contact him ______ this morning, but there was no answer at the number he gave me?

【正确答案】 D

【答案解析】根据but there was no answer at the number he gave me(但是他给我的电话号码没有人接听)和I tried to contact him(我试着联系他)判断，最符合句意的是(D)repeatedly(再三，多次)。