Giúp tớ với ạ , tớ cảm ơn

25. you give me some advice about the language course? C. May A. Have B. Should 26. Why didn t you give me a call yesterday? We A. can D. Could discuss everything together. B. may C. must finish the work because I was very tired. C. couldn't D. could 27. Yesterday I A. could 28. I woul ...