Beats Finished Tim I B Found Race Guess

"It beats me how they finished before us."
"Beats me why he was so mean to you."
"Beats me how she found out we did it."

A. "So how did you and Tim do in your race?"
B. "I finished in third and Tim finished in second."
A. "You got third? How did Tim beat you?"
B. "Beats me, I guess he has been training really hard."

Other Common Sentences

"I have no idea how to do this."
"I don't know what he's talking about."