be busy doing sth.造句（注中文）!

用be busy doing sth.句型造句 be busy doing sth.造句（注中文）! 请用be busy doing sth 的句式造句 be busy doing sth.造句（注中文） be busy doing造句 be busy doing sth 例句 be busy in doing sth be busy with sth 与be busy doing sth be afraid of doing sth be busy doing sth be glad to do buy sb sth bring sb sth help sb with sth 造句 be busy doing 过去式+造句 英语 翻译 be busy doing sth 有没有be busy with doing sth? BE BUSY DOING STH 是主系表结构吗 be busy doing sth 与be busily doing的区别 be worth sth./doing sth.造句, be busy doing sth/with sthbe busy doing sth 后跟动词be busy with sth 后跟名词麻烦谁能造个句子 be busy doing造句10个 用下列几个词组造句..be busy doing sth.end upcome up withconcentrate ontake sb.into doing sth.draw upeven if别造太难理解的,