只要善于揣摩（），就会明白客人心理在想什么，从而使客人满意而归。

A.客人的表情

B.客人的心理

C.客人的态度

D.客人的行为

Although many modifications have been made in it, the game known in the United States as football can be traced directly to the English game of rugby.

A．rules

B．changes

C．demands

D．leagues