Since "intentional" means done on purpose, the sentence tells us that nobody in Lily's school would've done something harmful to Mark's locker on purpose. But the damage did occur, so it must've simply been an accident. "Deliberate" means the same as "intentional," and is therefore the opposite of the correct answer. "Malicious" also implies that someone had mean intentions, and "extreme" means that there was an unusually large amount of damage, which we do not know to be true.

Josh thought he knew all of the other students, but he was surprised at the assembly, so he must've been wrong. This means that some of the students Josh saw were strangers—not the familiar faces he was expecting. "Unfamiliar" is therefore our answer. Why are the other three choices incorrect? If Josh had only spotted "recognizable" faces, he wouldn't have been surprised, so that must not be the proper word to complete this sentence. Neither "friendly" nor "fearful" imply that the students were strangers, so those words do not fit here either.

It makes sense that the subject would feel tired and “weary” after running a race, as "weary" means very tired. To help you, "energetic" means full of energy, "tragic" means sad, and "spiteful" means acting based on petty feelings of revenge.

It is extremely unusual for there to be snow in the summertime, so it is not “typical” weather. Typical means normal, usual, or predictable. It is an antonym of all the other answer choices. "Extraordinary" and "remarkable" both mean not ordinary, but great or special, and "unusual" and "bizarre" mean not ordinary, but weird. 

The sentence suggests that he was ready to get going after waiting a long time. The only answer choice that makes sense in that context is “eager," which means ready and excited to do something. To help you, "reluctant" means unwilling to do something and is an antonym, or opposite, of "eager," "enamored" means in love with, and "perplexed" means confused. 

If you learned that someone had stolen your bike you would likely feel angry. The correct answer is therefore “furious,” which means very angry. To help you, "invisible" means not able to be seen, "essential" means very important, crucial, or basic, "fragile" means easily broken or delicate, and "content" means happy with the way things are.

The context of the sentence suggests that the things she says are confusing and hard to figure out. This should lead us to the correct answer, which is “bewildering," an adjective that means confusing. To help you, "oblivious" means not aware, and "obvious" means easy to see or understand.

Global warming is something that might worry someone. The answer choice that most closely resembles worried is concerned, which means anxious, worried or troubled. To further help you, elated and ecstatic both mean very happy; haughty and arrogant are synonyms and both mean proud.

The context of this sentence tells us that it took the student a few days to finally finish his assignment. The answer choice that most closely resembles finish is complete. To further help you, abridge means make shorter; descend means go down; ascend means go up; mimic means copy.

Finding out you have head lice would likely be upsetting or worrying so the correct answer is distressed, which means upset. Furious could be a tempting answer choice, because it means very angry, but it is a bit too intense of a reaction to make the most sense. Thrilled and delighted both mean made happy.