Xiao Yan was looking at a shoe in the shopping mall and was struggling to decide whether to buy black or white  Xiaofang, a good friend of mine, said: You can ask the teller whether black has the highest sales volume or white has the highest sales volume
Don't you know
Xiao Zhang, who was preparing for the postgraduate entrance examination, was hesitating between the A training class and the B training class. His roommate Xiao Wang said: You go and ask the seniors and sisters who have been admitted to the graduate school to see if they applied for A or B, no. Did you know.