高等继续教育 / 统考英语B
正确率：统考%
题型描述: 单选题
For a successful business, friendly and _ _ _ _ _ staff are essential.
A. effective
B. respective
C. efficient
D. sufficient
For a successful business, friendly and _ _ _ _ _ staff are essential.
A. effective
B. respective
C. efficient
D. sufficient
参考答案：
佳题速递：