In this context, we are looking for a verb of motion, in the past tense. By that criteria, sought and reaches can both be eliminated, as well as languished, which means to grow weak. So between towered and keeled, it makes more sense that the speaker would be overcome with beauty at a tall, majestic tree reminiscent of a skyscraper than one falling over-- the best answer is towered.

There are two things to pay attention to: (1) Reginald's loss of memory and (2) the fact that the sentence seems to indicate that he is remembering these former students in their absence. That is, it is not a matter of him recognizing them when they arrive in his presence. Instead, he cannot "call them to mind"; that is, he cannot "recall" them. Therefore, this is the best option among those provided.

The general sense of the sentence is that if you climb up a mountain, you will some day have to climb back down that mountain. The best word for this among the options is "descend," meaning to go down, and the opposite of "ascend," meaning to go up. The other options are far too specific for our purposes.

There are two clues in this sentence, both of which help you find your word. The first (and best) is "thus breaking company policy as well as the rules of basic human decency." This means that Pete's action was clearly wrong. You likely thought this anyway, but the sentence indicates it clearly as well. Now, the fact that he had some kind of "privileges" implies that his new position gave him access to e-mails that he did not have before. When we misuse privileges or rights, we can be said to "abuse" them. The word does not have to be used for physical or emotional violence alone.

Apparently Ted had some annoying habits, leading him to lose all of his friends. While he seems to have judged them as being bad, the point of the sentence is that he wanted to make a change in them. He hoped that this would change his sad situation. To "alter" something is to change it. It comes from the Latin for other or another.

The best hint that we have about friends' actions (according to our sentence) is that one friend is able to do whatever it is "before" the other actually acts. A "prediction" takes place in just this manner. The word literally means to speak before based on its Latin roots. Of all the options, this is the only one that is directly related to the clues provided in the sentence.

Two clues are provided in this sentence to help you choose the correct answer. The first is the prepositional phrase "with additional protein." This implies that many body builders must add to their diet. The second sentence repeats this same point: they need more protein than could be provided by normal eating. A "supplement" is something that adds to another thing. In particular, when applied to a person's diet, it helps to provide what would otherwise be lacking.  The word can be used as a verb to describe the act of such "supplementing."

Since moderate sounds are said to be "too quiet" for many elderly people, the implication is that they need to make them louder. This does not mean that they "brighten" them. That word would be a mismatch of senses. (Colors might be brightened, as could light. However, this does not really hold for sounds, except in a metaphorical sense.) To "amplify" is to increase or make louder. "Amplifiers" are added to sounds to make them play more loudly out of speakers, and something that is "ample" is plentiful (like a loud sound, though "ample" can apply to many other things).

The key word for this sentence is "identify." The general idea is that it used to be difficult for computer programs to identify a person's face. That is, it was difficult for a computer to conclude that a particular face image belonged to a particular person. In humans, we call this process "recognition." By extension, we can also say that a computer "recognizes" someone, at least insofar as it can identify that person in this manner.

The sentence means to say that the only way to overcome a hoard of ants is by means of traps and an exterminator. To "combat" means to fight. This is another way of describing the "overcoming" of such a hoard of insects. We often use "combat" as a noun, as in "combat in the war."