It was very difficult to the excited football fans.A. set downB. put downC. come downD. c

问题补充：

It was very difficult to the excited football fans.

A. set down

B. put down

C. come down

D. calm down

答案：

A. set down

B. put down

C. come down

(答案→)D. calm down

解析：短语辨析。A写下，记下；B镇压；C下降；D镇定；结合句意可知D 正确。句意：让球迷镇定下来真是非常困难。