I am not writing a letter.改错、

I am not writing a letter.改错、 i am reading,not ___A am writing B write C writing D was writing选哪个,为什么为什么不选A呢 I am writing a letter是什么意思 I am writing a letter.提问： I am not good at writing.改为同义句 L am writing a letter对am writing a letter提问 I am not a I not writing a letter.改错 Am I writing a letter?的反义疑问句是什么? I am writing a letter you in my school为什么 writing,my,i,a,father,letter,to,am 排句 I am busy writing a novel.是什么句型 I am writing a report now.改为一般疑问句 I am not a good I am not a fool I am not a princess Are you listening or writing这句话的答安选Yes,I am.I am listening NO,I am not writingAre you listening or writing这句话的答安选Yes,I am.I am listening NO,I am not writing还是 I am listening and writing为什么 I am writing a letter.这里的writing是及物动词还是动名词啊?