Identify the preposition.

1. He was bitten by the dog with the red collar.
a: by, with

2. Take the fire escape on the side of the building.
a: on, of

3. He brushed his hair with the brush from the dollar store.
a: with, from

4. The robot with the mohawk gave the papers to the student.
A: with, to

5. Before he released the balloons up into the air, he took a picture with them.
A: before, up, into, with

All are right, except for one! Before in sentence 5 is not a preposition.

You're welcome. And you did a great job!

oh, thanks!

To identify the preposition in a sentence, we need to look for words that indicate location, direction, time, or manner. The preposition is usually followed by a noun or pronoun called the object of the preposition. Let's analyze the given sentences to identify the prepositions:

1. He was bitten by the dog with the red collar.
The prepositions: by, with
Here, "by" indicates the agent who did the action, and "with" indicates the instrument or means.

2. Take the fire escape on the side of the building.
The prepositions: on, of
Here, "on" indicates the location or position, and "of" indicates possession.

3. He brushed his hair with the brush from the dollar store.
The prepositions: with, from
Here, "with" indicates the instrument or means, and "from" indicates origin or source.

4. The robot with the mohawk gave the papers to the student.
The prepositions: with, to
Here, "with" indicates the characteristic or description, and "to" indicates the direction or recipient.

5. Before he released the balloons up into the air, he took a picture with them.
The prepositions: before, up, into, with
Here, "before" indicates the time, "up" and "into" indicate the direction, and "with" indicates accompaniment or association.