---I argued with my best friend yesterday and I don’t know what to do now.-Maybe you s

问题补充：

---I argued with my best friend yesterday and I don’t know what to do now.

---Maybe you say sorry to her.

A. must

B. should

C. need

D. may

答案：

A. must

(答案→)B. should

C. need

D. may

解析：should +动词原形，表示建议，故选B