He was busy writing a story,only ____...

He was busy writing a story,only ____... He was busy writing a story, only ____ once in a while to sm 1.He was busy writing a story,only once in a while to smoke [-A59] He was busy writing a story ,only ______ once in a wh 非谓语动词 伴随状态He was busy writing a story ,only _____ once in a 19.He was busy writing a story,only _______ once in a while He was busy writing a story,only ( stopping ) once in a whil 这个英语句子He was busy writing the story,only breaking off occasi he was busy writing a story,olny stopping once in a while to He was busy writing a story ,olny ( ） once in a while to smo He was busy writting a story ,only stopping once in a while who is in the room? Mr.Smith.He ____ a story.A is writing B