12. Which of the following is the best opening sentence for a business letter that you want to sound fairly informal?

A. Please be advised that I've just received your order.

B. Your order of February 10 arrived in our office today.

C. I am in receipt of your order of February 10.

D. This letter is to make you cognizant of our receipt of your order.

rude much?

To determine the best opening sentence for a business letter that sounds fairly informal, let's analyze the given options:

A. Please be advised that I've just received your order. - This sentence is polite but slightly formal due to the use of "Please be advised."

B. Your order of February 10 arrived in our office today. - This sentence is direct and provides important information without using overly formal language.

C. I am in receipt of your order of February 10. - This sentence is more formal and uses the phrase "in receipt of" which might sound too official for a fairly informal letter.

D. This letter is to make you cognizant of our receipt of your order. - This sentence is very formal and uses complex language to convey the message.

Based on the analysis, the best opening sentence that sounds fairly informal for a business letter is option B: "Your order of February 10 arrived in our office today." It is straightforward, provides the necessary information, and avoids excessive formality.

Which one sounds like normal English? Read them aloud to help you decide.