QUES: Continue writing.

The puppy came up to Steven after running away from Lawrence because
+++++++++
ANS: Lawrence has a stern voice.

QUES: Continue writing.

When at the bookstore, Emily bought a comic book for Natalie because
+++++++++
ANS: Emily wanted to surprise them.

QUES: Continue writing.

Elena caused an accident with Carrie when her brake pedal stopped working;
+++++++++
ANS: Elena accepted the blame.

QUES: Continue writing.

Brian obtained a naturalization certificate before Michael because
+++++++++
ANS:
Michael had not yet been granted U.S. citizenship.