1.   I would be grateful if you would acknowledge receipt of this letter.

2.   Liverpool have acknowledged receipt of their letter in which they hold Saunders responsible for dangerous play.

3.   Please acknowledge receipt of this document by signing and returning the enclosed form.

4.   We do not normally acknowledge receipt of letters for publication.

5.   I should be grateful if you would acknowledge receipt of this letter.

6.   I should be grateful if you would acknowledge receipt of this.