Rewrite the sentence to eliminate ambiguous, remote, or broad reference.

since the car drips oil on the driveway, put a piece of cardboard under it.

ANSWER:

Put a piece of cardboard under the car since it drips oil on the driveway.

EXPLANATION:

If we examine the original sentence, we'll notice that we cannot be sure where to put the cardboard under. "It" in the sentence may refer to the car, the oil, or possibly the driveway. Writing it in a way such that the thought is clear would be the best way to structure the sentence.

the speaker versus the boy.

no. but, i heard its a good book. you could look up the answers or summary on some website.