To tell you the truth, I don't know if anybody else noticed it, but I did. As a speech therapist a number of years ago evaluation the articulation of children, I gave an articulation test to all of the incoming kindergarteners. I gave the same test over and over and in response to the pictures shown them, children said the word. Now I know laughter is the only correct response. Just between you and I case is important.
Verbs has to agree with their subjects.
A preposition is something you should never end a sentence with. It's redundant and repetious. If the writer is considerate of the reader, he won't have a problem with ambiguous sentances. This sentance no verb. You should be aware of the conditional case if you was to use it.