Formal words to use in emails

I am writing ABOUT the item I BOUGHT last time. 2 answers are correct

• with regard to/ sold

• with regard to/ purchased

• in connection with/ rented

• with reference to / ordered

I want to say sorry about

• I want to apologize about

• I would like to say apology about

• I would like to apologize for + Ving/ Noun

We've got enough investment to start our business

• We have received deficient investment to keep going

• We have received sufficient investment to establish our business

• We have gathered necessary profits for our star-up company

• None is correct

This is the secret document.

• private

• confidential

• guarded

• official

I want to tell you that the company is in danger.

• would like to inform / making profits

• love to inform/ losing money

• would like to inform/ at a heavy financial loss

I have to inform you that the project you are in charge of is one week late.

• overestimated

• overdue

• overrun

• overtaken

Please get in touch with me for further discussion.

• call

• contact

• keep in touch with

• correspond with

The company will move to another place soon.

• relocate/ quickly

• change position/ quickly

• relocate/ promptly

I would appreciate your help. Choose the WRONG answer

• support

• cooperation

• supervision

• collaboration

Give me all my money back, now!

• Please return my money, now!

• Please give me a full refund immediately

• I would appreciate if you could give me a full refund immediately