用be busy with 造句

用be busy with 造句 用be busy with sb造句 用be busy with造句 两个 用英语造句1、用be…busy with造句.例句：They are both very busy with their 造句:be bad at sth be busy doing be busy with sth be excited a at work和 be busy with sth造句 用be busy doing sth.句型造句 be busy doing造句 be busy with sth be busy with BE busy with 还是 BE busy to be busy with与be busy in