交通银行

单选题 Hotel employees are reminded to be __________and courteous, especially to first-time guests.

A.friend
B.friends
C.friendly
D.friendship

参考答案:C进入在线模考
我们提醒饭店员工礼貌谦让,尤其是对第一次到访的客人。横线处需填人be动词的表语。故正确答案为C。