on business用什么提问

on business用什么提问 用Go on business 造句 for business和on business有什么具体区别 on business on business on business travel on business 有什么用法? on the second floor用什么提问 on the ground 用什么提问 in on time 用什么提问 be away on official business和be on a business trip有什么区别 I work on my business的on my business是什么意思?为什么用on? on a business trip 中business什么词性business是名词呢么 on a business trip（介词+冠词+名词+名词）很奇怪 lucy will leave for london on business in three hoursin three hours对划线部分提问 business是不可数名词吗?榜样用英语怎么说那my father went on _____(business)in the south last week中应填什么呢？？？ on business怎么讲?有什么特殊用法么？ Nancy will leave for New York on business (in three days.)括号内提问____ ____ will Nancy leave for New York on business? go on business是什么意思?