Choose the letter A, B, C, or D to complete each of the following questions. I don't understand this point of grammar. I wish I _________ it better.Đoạn văn15/40Choose the letter A, B, C, or D to complete each of the following questions. I don't understand this point of grammar. I wish I _________ it better.understoodunderstandsunderstandhave understoodGiải thích A. understood