Father is busy writing postcards this morning and______ten so far.A.wrote B.was writing C.has written D.has been writing为什么选D?D是什么时态?

where is your father?he is on-------------( busy)where is your father?he is on-------------( busy) My father is very busy and my mother is very busy too.同义句回答 My father is always busy every day .翻译 My father is busy （piant）every day. My father is always busy _______his work.填介词 My father is busy doing his work.的同义句 my father is very busy these days否定句 My father is busy(),He()finish his work before lunch father,is,Bill's,weekdays,always,busy,on My father is busy today.（改为同意句） My father _____ _My father is busy today.（改为同意句）My father _____ _____today. my father is busy today my father is ______today 同义句. My father is really busy today.改为一般疑问句.(   )(  )father really busy today?1My father is really busy today.改为一般疑问句.( )( )father really busy today? 2 Why does he likes art?这个句子 My father is very busy these days改为否定句 答句 My father------busy----------- -----these days my father is very busy these days 改为否定句my father（）busy（）（） these days速度啊 英语考试busy用法father is busy cooking the meal while i'm busy the homework.可以填doing吗 my father is a doctor.He is very busy.my mother is teacher.的汉语意思? Mother is a policewoman.She is too busy.Busy.But she n___to spend time with Father and me 填空：My father is a ( ) busyMy father is a ( ) busy.He comes back home late every day.