如何使用 "letter" 造句

1. What 's the postage for this letter ?
这封信的邮资是多少?
2. The first letter is given .
第一个字母已经给出。
3. Government officials would not confirm the letter 's existence .
政府官员拒绝证实这封信件的存在。
4. Sending cards is fine but they lack personal touch which comes in a letter .
给父亲寄一张卡片虽是很好,但缺少了书信中那种个人情感。
5. Some 236 companies have signed a letter of protest .
约有236家公司联合签署了抗议书。