"Mac sat bolt upright and threw off his blankets" Describe what "bolt upright" means. Why did he wake up in this manner?

"Walking parallel to the footprints, Mac sett off into the woods." Define the word parallel.

Mac let Dennis and Jeremiah sleep while he left to find Anna. Describe the conflict Mac experienced in making this decision.

"...the idea rang hollow in his [Mac's] head" (Anna leaving because she needed to clear her head). What does "rang hollow" mean? Why would this idea ring hollow?

"He [Mac] worked to summon his earlier hope that she [Anna] had just gone for a walk." Define/give an example of "summon".

How did Dennis know it wasn't likely that a zombie had attacked Anna and Dennis while they were sleeping?

"The bumpy ground jolted the truck around..". Define or give a synoym for "jolted".

Mac used a tiny keychain flashlight to look for Anna. "He wished desperately that he had something bigger". Define the word "desperately".

Mac tried to "will" Dennis and Jeremiah to not wake up. What does to "will" something mean?

"The figure was bent over and seemeed to be looking down, unaware of his presence." Define the word "unaware." How does the prefix "un" change the meaning of the root word?

Use context to determine the meaning of "stealth". "Zombies weren't known for their stealth--he definitely would have woken up to their loud graons and heavy, clumsy footsteps."

"...thoughts screeched through his head at dizzying speeds". Define the word "screech". Why do you think the author chose to use this word?

"Dennis awoke with a startle." How does this compare to the way in which Mac woke earlier?