21.I am sorry____________ written you a letter at the time.A

Have you ever written a letter to the Santa Claus? Have you written a letter in English? ---I haven't written a letter to him for a long time.how abo 英语选择题--- I haven’t written a letter to him for a long time. Have you written a letter to you mather ? I wrote _____ yest I ____(write) a letter at that time I am writing a letter. I am a letter是什么意思 "I" am a letter [改错] I am sending you a letter.改为同义句. I am writing a letter you in my school The letter in French.I can not read it.A,is written B,was vw