Thank you for Miss/Mrs/Mr (teachers name)'s assistance in our work and we very much enjoyed working with you.
Appreciation to all the other staff members for their efforts contributed.
.是不是不要第一人称?恩，意思不要连起来不要“i also”...而且这是要给很多人看的，所以最好不要用“you”直接指称。。。。我也回省略号。= =第二句差不多了。所有外教统一用一个句子，所以不用外教的名字写上去了。？ 什么意思？最后一句话什么意思