用be+doing 造句^-^

用be+doing 造句^-^ 用be doing tomorrow造句 用 be doing 和be doing to do 造句 三个 用be good at doing造句 用be busy doing sth.句型造句 用be interested in doing 造句 用“be doing”造句,不同人称 用be slow in doing sth造句 be busy doing造句 be always doing 造句 be curious about doing造句 be terrified of doing造句 there be+doing+其他造句 be busy doing 过去式+造句 用there be sb doing sth 造句现在就要 用Be afraid that/of sth /doing造句 用3.see sb.doing4.there be doing造句中文 用used to do be used to doing造句