The best clue in this sentence is the word "upon," which indicates that the monks apparently came to the city in protest. Likewise, it is important to notice that they came as a "group." Thus, we should say that they gathered together, not that they fled together. The general idea is that they gathered and then all "stormed" the city in protest. The word "congregate" means come together in a crowd.  A church "congregation" is called such because it is a gathering of people.  Based upon its Latin roots, it is literally a "flocking together." The monks gathered and then all together "swarmed"—i.e. moved as one large group—upon the capital city in protest as a swarming group. Swarming insects are so called because they act as a group made up of many individuals.

"Mitigate" means to lessen damage, while "impute" means to attribute or ascribe. Only "abstain" means to stop from doing something bad. In the second blank, the student is trying to undo the damage, so "horrify" does not make sense, and "recuperate" means to recover. Only "placate" means to lessen damage.

The best clue for starting this question is "only the tiniest quantity of vapor." It seemed that the inlet for the pipe could allow in only a small quantity of gas. However, it seems that more had happened—for Heather was surprised at something. The general idea is that gas had spread throughout the house. Hence, "diffused" is an excellent first choice, and "emitting" well describes the general act of allowing a substance to "go forth" (as would happen with the gas coming out of the pipe). ("Emit" comes from Latin roots literally meaning to send forth. To "trans-mit" means to send ("-mit") across ("trans-").)

Clearly, the first blank has to be something describing the act of stating an opinion and (likely) defending it. Many of the choices provided would fit that role; therefore, the best thing to look at in a case like this is the second blank and the options provided for it. Almost all of the wrong answers have something to do with pleasing or displeasing. This is not the point of disagreement between the two brothers. They disagree as to whether or not the meal will be filling. Therefore, the best option for the second blank is "satiate," meaning to satisfy or fill.

Sentence completion questions sometimes count on students studying roots, then throw in answers that seem like they could be the right answer based on the roots, but do not actually have the appropriate definition, as a way of separating the wheat from the chaff. This is one such question.

The best strategy for a compound sentence such as this, which doesn't have clear indications of meaning from conjunctions, is to use the text's logic to reach your answers. This means when you read along, it can be helpful to "fill in the blank," i.e. guess what kind of word would be in the blank before looking at the answer choices, so you can choose the best answer upon seeing it.  

For the first blank, you need to look at the first half of this sentence. It relates da Vinci to the helicopter, which is a twentieth-century invention; thus, it would make sense for da Vinci to have "foreseen" the existence of modern inventions. "Forecasted" (predicted) makes sense in this context, but "precasted" (cast something in a different location than where it will be installed) does not.

For the second blank, the same trick works. Reading this half of the sentence again, the art, which is described by the word that will go in the second blank, is seen by thousands of people every year. Thus, it must be well-known or well-liked, which "esteemed" (admired) accurately conveys, while "estimated" (roughly judged the value or total of something) does not.

The key word in this selection is the concessive "although." Ralph at least understands the motivations that could have led the president to take the course of action in question. The word "induce" literally means to lead into. Here, it takes on the meaning to bring about. "Condone" means accept in this sentence (though it can also mean permit).  Though Ralph did not think the action to be acceptable, he did at least understand its motivating causes.

Two of the wrong options tempt you to find a harsh form of scolding to contrast to the "mild treatment" that Aryeh believes that he sees. We are clearly looking for scolding, as is indicated in the last sentence. The best option is the pair that has "objurgate," for this word means to scold harshly. The word "inhibit" likewise works well for the second blank, for it means hinder or restrain. It is close enough to "prevent," which is the general sense of this blank.

The general idea of this sentence is that the facts did not condemn Peter, even though the jury seemed certain to reach a guilty verdict. The word "inculpate" is quite rare, but it fits rather well. It means to make to be guilty. When someone is "culpable," he or she is guilty, and a "culprit" is a guilty party. Thus, the facts failed to make him appear to be guilty, though he thought he would be judged to be so.

The word "blithely" means done in a casually cheerful manner. For this reason, it is unlikely that Raphael merely "slipped" the item out the window. (A blithe person would likely throw it without much care at all.) Also, do not be tricked by the word "tousled"—which is not "tossed"! To "tousle" someone's hair is to make it messy. By so obscuring the windshield of the driver behind him, he thus endangered the other driver's life. That is, he put him or her into peril—"imperiled" them!

Since “castigated” and “venerated” do not fit after “war crimes,” we can assume the answer to the first blank is somewhere along the lines of “committed.” Since the man is speaking out against the war crimes, the only plausible argument would be to give up the throne. “Committed . . . abdicate” is the only answer that fits.