用be busy doing 和be glad that共造一个造句 中英 急

用be busy doing 和be glad that共造一个造句 中英 急 be busy doing造句 用be busy doing sth.句型造句 be busy doing 和 be busy in doing 的区别? be afraid of doing sth be busy doing sth be glad to do buy s 请用be busy doing sth 的句式造句 be busy doing中doing什么成分 be glad that 造句 三句 be busy doing sth和be busy with sth 用 be doing 和be doing to do 造句 三个 造句:be bad at sth be busy doing be busy with sth be excited a be for from ,be busy doing 分别造句