用be certain to do sth 造句,造四个句子,急用

用be certain to do sth 造句,造四个句子,急用 用be afraid to do sth造句 用be able to do sth造句 用be used to do sth.造句 用be supposed to do sth造句 用be used to do sth 造句 用be early to do sth.造句 用Be.sorry.to.do.sth.造句. 用be used to do sth造句 用be ready to do sth.造句 excited造句用be excited to do sth造句!还有pack sth.with sth.....be make sure to do sth、be sure of sth、be sure that 、be certain