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

（）are mentioned at the beginning of the passage. A: Love letters B: Complaint letters C: Thanks letters D: Invitation letters

中国大学MOOC: What categories can letters be divided into? A．Personal Letters B. Social Letters C. Notes D. Business Letters

Generally speaking, letters can be classified into formal letters and informal letters based on the formality of letters.

Could you tell me______ in the Russian alphabet A: how many letters are B: how many letters are there C: how many there are letters D: how many letters there are

All keywords in C are in ____________ A: LowerCase letters B: UpperCase letters C: CamelCase letters D: None of the mentioned

1. What categories can letters be divided into?A．Personal Letters B. Social Letters C. Notes D. Business Letters. A: A．Personal Letters B: B. Social Letters C: C. Notes D: D. Business Letters.

Informal letters are usually business letters or written to strangers.（ ）

Social business letters include the following but ___.() A: Letters of condolence B: Letter of Resignation C: Letters of thanks D: Letter of Invitation

The secretary had no more letters ________; she began to put all the letters in envelopes.