—Look!He’s running so fast!
—Hard to his legs were once broken.
A. know
B. imagine
C. realize
D. find
网友回答
A. know
(答案→)B. imagine
C. realize
D. find
解析：imagine 意为“想象,设想”。根据所提供的情景Look! He’s running so fast!可判断出很难想象出他的腿曾经断过。know意为“知道,了解,认识,熟悉,认出,分辨,确信”。 realize意为“认识到,了解,实现,实行”。 find意为“找到,发现,感到,查明,得到,认为,见到……的存在”。