用be previous to造句

用be previous to造句 用'to be'造句 previous to 用be going to造句 用be up to造句 用be used to造句 用be going to造句 用be bound to 造句 用used to be 造句 用to be specific造句 用 be beginning to造句~ 用be able to造句 用 be similar to 造句 用be ashamed to造句 用be going to造句 要十句 用《sb be made to sth》造句? 用 be hurried to do 造句 英语 用be lucky enough to do造句