sentence: Samantha's hormones were going wild, but Kayla hadn't yet hit puberty, so 
complete: Samantha was maturing faster.

sentence: When it comes to being stealthy, Amy is much better than Laura due to 
complete: Amy being a commando.

sentence: Kicking a soccer ball near the bottom gives it backspin, and near the top gives it topspin.  He kicked high for the 
complete:
topspin .