1.when doing business in the Arab world,do not be surprised if your meeting is interrupted several

be doing sth.when 可不可以用be doing,when be doing? when+doing 还是when+to do sth. when i do还是when i doing when earthquake happen,what are you doing? 如何对be doing sth when造句 What are you doing when you fifteen? What is Carl doing when Daphne sees when is it doing now?的回答 What is Carl doing when Daphne sees when 后面可不可以接doing sth when to do和 when doing的区别是什么 when were you doing when i called you just now? when you doing your homework 跟when doing your homework 有什么区别 when doing 和 while doing 的区别when doing 和 while doing 有什么区别?最好有相关造句说明.还得有中文解释啊 用动词be的正确形式填空. 1.What ___ you doing when the teacher came?急啊! 1.There are certain ____ when you must interrupt people who are in the middle of doing sth. 1.What were you doing when the UFO a_________?I was in the b_________ chair.空上填什么.