中国大学MOOC: Mr. and Mrs. Roth regret that a previous ________ prevents them accepting the kind invitation.
举一反三
- Mr. and Mrs. Roth regret that a previous engagement________ them accepting the kind invitation.
- 中国大学MOOC:"I regret that a previous engagement prevents me from accepting your kind invitation.";
- 中国大学MOOC: A letter of invitation can be classified into formal invitation and informal invitation.
- An invitation letter is a kind of social letter,it is divided into formal invitation and informal invitation.( )
- 中国大学MOOC: Here are two invitations. The first one is an invitation card. It’s a _________invitation.