题目
4. (1.0分) She had been at the company for 10 years and knew all the __.A. ins and outsB. up and downC. on and offD. back and forth
4. (1.0分) She had been at the company for 10 years and knew all the __.
A. ins and outs
B. up and down
C. on and off
D. back and forth
题目解答
答案
A. ins and outs