Answer:

The expression that is different from the other two in the third set (3.) is "Why don't you?" It is different because it suggests an alternative course of action to the person being addressed, whereas the other two expressions ( "I feel that..." and "I suggest that...") make a statement or offer a suggestion without implying any action on the part of the person being addressed.

Answer:

Correct Grammar

Explanation:

There are a few errors in the letter:

1.) The salutation should be consistent throughout the letter. "Dear Sir or Madam" and "To whom it may concern" are both acceptable, but "Dear Lisa" is not appropriate unless you are addressing a specific person named Lisa.

2.) "My nameis" is incorrect. The correct phrase is "My name is."

3.) "Why don't you?" is not a proper way to make a suggestion. Instead, you could use "I suggest that" or "Have you considered."

4.) "Don't forget that" is not a proper way to end a letter. It is better to use a closing such as "Thank you" or "Sincerely."

5.) The expression that is different from the others is "Talk to you soon!" which is not a formal or professional way to end a letter.

A corrected version of the letter could look like this:

Dear Sir or Madam/To whom it may concern,

I am writing to [reason for writing].

I suggest that [suggestion].

Would it be possible for you to [request]?

Thank you for your attention to this matter.

Sincerely, [Your Name]