问题
选择题
In order to solve the problem as soon as possible, they had a __________ discussion.
A．face-to-face
B．face to face
C．faces-to-faces
D．faces to faces
答案
答案：A
考查固定短语。face to face相当于副词，修饰动词；face-to-face相当于形容词修饰名词，故答案为A。