be busy doing 过去式+造句

be busy doing造句 用be busy doing sth.句型造句 be for from ,be busy doing 分别造句 造句:be bad at sth be busy doing be busy with sth be excited a 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） 造句,各两句.be worth doing 值得做...be busy doing.忙着做 too...to do 太. be+busy+doing=be+( )+( be busy doing 和 be busy in doing 的区别? 英语造句,每个造2句1.be busy with sth2.be busy doing sth3.help sb do 用be busy doing 和be glad that共造一个造句 中英 急