درس 1: Sense of Appreciation
زبان انگلیسی (3)
دوازدهم
دوره دوم متوسطه- نظری
علوم ریاضی
درسنامه آموزشی این مبحث
She has written the letter, but I don’t know why it . . . posted yet. She might have forgotten to do so.
1 )
has
2 )
has been
3 )
hasn’t
hasn’t been