Which one of these sentences contains a prepositional phrase?

Question

A. You may think otherwise, but what I tell you is true.
B. Where did you find the papers that I lost?
C. To be, or not to be: that is the question.
(D. Trolls live under bridges; elves do not.)

Identify the compound sentence.

A. While it rained on the beach, we swam in the ocean.
(B. The rain began to fall, but we did not want to leave.)
C. Because it had been sunny all week, we did not bring umbrellas.
D. Last summer, we decided to drive to the beach.

Which of the following sentences is correctly punctuated?

A. The company held it's annual party at the convention center.
(B. Mr. Jones visited the YMCA before becoming a member.)
C. The local police asked the F.B.I. to assist with the case.
D. Mary remembered to buy milk didn't she?
Are my answers correct?

Answer 1

Yes, your answers are correct.

Answer 2

On the first question, your answer is wrong. I don't think "Ms Sue" is the real "Ms. Sue" here. In fact, all three of your answers are wrong. For the third question, only one is incorrect. Three are correctly punctuated.