I am writing this letter to call on_________.As some of you may know,________.In face,________. It is necessary for us to________.On the one hand,__________.On the other hand,_________.Hesce, it is high time________.Firstly, we should_____________.Secondly,___________. Please contact us via_________.Please join us in the effort to __________. Thank you for your paiticipation Sincerely, ____________ 更多精彩内容 全国新东方英语课程搜索
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