帮我写英语作文:你是 LiLi，Sandra 是你的好朋友。Sandra 将在 6 月 15 离开上海，但是由于你工作上的原因，你不能去机场送别了。请你写一封信给 Sandra，信中要包含以下几个要点： 4. 你非常伤心 Sandra 离开上海。 5. 告诉 Sandra 你不能去机场送别及原因。 6. 希望我们保持联系，下次再聚。80词三年级作文

Dear Sandra, I'm so sorry to hear that you'll be leaving Shanghai on June 15th. It makes me feel very sad to know you're going away. However, due to my work commitments, I won't be able to see you off at the airport. Please understand my situation and accept my apologies. I hope we can stay in touch and meet again in the future. Keep in mind that you'll always be a good friend of mine. Take care and best wishes for your new journey! Your friend, LiLi