选择题：题目：提高质量保证

题目：Invitation Letter邀请与约见函外语类问答题,商务英语问答题,初级(写作)问答题

题目：Congratulation Letter祝贺与慰问外语类问答题,商务英语问答题,初级(写作)问答题

题目：Resource Planning Manager: Assessment of Suitability for Home-based Working外语类问答题,商务英语问答题,初级(写作)问答题

题目：Resource Planning Manager: Assessment of Suitability for Home-based Working.外语类问答题,商务英语问答题,初级(写作)问答题

题目：抱怨和索赔信函外语类问答题,商务英语问答题,初级(写作)问答题