第一个 可以
第二个
开头：I am glad to receive your letter and I am writing to you now.
结尾：That is all I want to say about it.
Best wishes.
第三个 可以
这样的开头,和结尾可以?英语作文的万能开头和结尾那个yours 后面要加人名?
第一个 可以
第二个
开头：I am glad to receive your letter and I am writing to you now.
结尾：That is all I want to say about it.
Best wishes.
第三个 可以