Jeremy,who

来源：语文精选馆 1.72W

Jeremy, who __________on his food, looked up at the mention of the word cash.

A．has been concentrating B．has concentrated

C．had been concentrating D．had concentrated

考查时态。句意：一直专注于吃东西的Jeremy一听到“钱”这个字就抬起头来。concentrate这一动作发生在looked up之前并且还在进行，应该用过去完成进行时，故C项正确。