Having trouble on this. On the sentence below you are supposed to write the correct form of the verb either lay or lie. Not sure which it would be. "Yesterday afternoon he ___________ the horn on the table.

Lie and lay are tough.

Since the action happened yesterday, you need the past tense of lay (to put).

he LAID the horn . . .

http://web.ku.edu/~edit/lie.html

To determine whether to use "lay" or "lie" in the sentence, you need to understand the difference between these two verbs.

- "Lay" is a transitive verb and requires a direct object. It means to place or put something down.
- "Lie" is an intransitive verb and does not require a direct object. It means to recline or be positioned in a flat or resting position.

Now let's tackle the sentence: "Yesterday afternoon he ___________ the horn on the table."

Since the sentence includes an object ("the horn"), we need to use a transitive verb, which is "lay." Therefore, the correct form to fill in the blank is "Yesterday afternoon he laid the horn on the table."