Because two different professions are coming together to solve, the best choice is "collaborated," which means to work together. 

The wrong answers to this sentence fall into two classes. On the one hand, “enraged” and “incensed” imply extreme anger, which are not justified by the sentence, which describes the old man as relatively calm in normal conditions. These options are distant contenders at best. On the other hand, “submerged” and “inundated” imply that he was overwhelmed. While that might be the case, the sentence clearly has to deal with his emotional / mental state since it speaks of him remaining calm in most situations; therefore the best option is “perturbed” which means “anxious” or “upset,” a good description for being “not calm.”

We know that the moon was full a week ago, but is now a smaller crescent, so it has gotten smaller in the past week. We need a verb that means to appear to get smaller. While "belittled" sounds like a good option, "belittle" has nothing to do with physical size and means to make (someone or something) seem unimportant. Because "wane" means to have a progressively smaller amount of an object's surface illuminated so that it appears to decrease in size, it is the best answer choice.

We can tell by the context of the sentence that we're looking for a verb that means something like "make smaller," and more specifically, "wring out." While "whittling" sounds like it could be a potential answer because things that are whittled usually get smaller in the process, "whittling" actually means "carving wood into an object by repeatedly cutting small slices from it," so it's not the correct word for the sentence's context. Since "compress" means "flatten by pressure; squeeze; press," it is the best answer.

In this situation, Jessica is indebted to Sarah for editing her paper even though it was not required for Sarah to edit it.  Therefore, Jessica compensated her by bringing her out to ice cream as a thank you for doing her the favor of editing.

Tom's sister wants to erase the comments of the morning or revoke them. In other words, she wants to rescind her comments.

The sentence implies that Scott had to become aware and comfortable with new aspects of life in his town, for they differed from what he had known. Such a process of becoming comfortable with something new is called “becoming accustomed.” Notice that the word contains the word “custom,” and the “ac” is really the “ad” prefix meaning “to or toward.” Therefore, the process of “accustoming” is (in a sense) “structuring oneself ‘to the customs’ of a given area or process.”

The implication here is that Travis “aims” at high goals. Therefore, one could say that he hopes to accomplish these tasks. Such hopes are often called “aspirations,” a word coming from the Latin for “to breathe toward.” There are English words like “despair,” that mean “without hope” but are based on a different (but very close) Latin word meaning hope. The word for “I breathe” is “spiro” and the word for “I hope” is “spero.” Latin students often learn the shortened quip, “Dum spiro, spero,” meaning, “While I breathe, I hope.”

The key word in this sentence is “tightly,” which indicates that Robert was not merely holding on with a limp hand. The best option, therefore, is “clutched” which captures this sense of direly holding on in a tight-fisted manner.

When someone is able to aid others in doing their work, particularly in making it easier, that person is said to “facilitate” the work. The word “facilitate” comes from the Latin root word for “easy,” found in related English words like “facile” and “facility.”