He went to Shanghai on b( ) last week.填一个以b开头的单词,请高人帮忙!
问题描述：
He went to Shanghai on b( ) last week.
填一个以b开头的单词,请高人帮忙!
答
He went to Shanghai on business last week.他上周去上海出差了 乘坐 交通工具用介词 by by bus by air by subway