Informal letters are usually business letters or written to strangers.（ ）
举一反三
- In full-blocked business letters, all text of the letter is written from , and usually there is a between paragraphs.
- An abbreviation is usually written in capital letters and used in trade terms, cables and facsimile, business correspondence and advertisement.
- Most business letters are written （）English. A: with B: in C: on
- Generally speaking, letters can be classified into formal letters and informal letters based on the formality of letters.
- What are the types of business letters? A: Letters of establishing business relationship B: Letters of shipment C: Letters of claim D: Letters of acceptance E: Letters of quotation F: Letters of enquiry G: Letters of counter-offer H: Letters of negotiation