The boss was with the speech by the graduate. Thus, he determined to give him a job offe

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(答案→)A. impressed; delivered
B. impressing; delivered
C. impressed; confirmed
D. impressing; confirmed
解析：考查非谓语动词。句意：那个毕业生的演讲给老板留下了很深的印象。因此，他决定给他一份工作邀请。sb be impressed with sth某物给某人印象深刻；排除B、D；speech与deliver是动宾关系，即“发表演讲”；confirm是“证实”的意思。故选A。