一个能够的版本：亲爱的汤姆。
亲爱的汤姆，来信收到，最近邻近大考，功课非常的多，所以回信晚了，请见谅。
Dear Tom, I have received your letter. Recently I have much homework to do because of the final exam, so please forgive me for replying you lately.
亲爱的汤姆，你问我关于该学历史还是计算机的看法，我将尽力给你一些有用的建议。
Dear Tom, you have asked me for my advice concerning whether you should study history or computer science at university, and I will try to make some useful Suggestions.
应用推荐