Note that in UK English if you start with Dear Sir or Dear Madam, youshould end with Yours faithfully. But if you use the person's name, you shouldend with Yours sincerely. This rule may seem arbitrary, but it is one of therules of formal...
[1-1] I think I'd better leave now.It's getting late. [我想现在我该走了。天色已晚了。] [1-2] I'm afraid I must be leaving now.I have taken up a lot of your time. [恐怕我现在必须离开了。我已经占用你许多时间了。] [1-3]I'll have to be going n...