Question

Which of the following sentences uses a preposition properly?
A. Connor waited in line while Ava parked the car.
B. Where is David at?
C. There was a big argument between Megan, Abira, and Lena.
D. I might of lent him the book, if he had asked

Answer 1

A.

B. is wrong because we don't end a sentence with a preposition.

C. is wrong because "between" is used only between two people or things.

D. is wrong because "of" is a preposition, but a verb is needed here.

Answer 2

Here's my issue with A. Connor waited in line is one complete sentence. Ava parked the car is another complete sentence. "While" is used as a conjuction here - not as a preposition.