Correct Answer: B

Rationale: The correct answer is 'never shone' as the sentence is discussing a past event (Saturday). 'Never shone' is the correct past tense form to describe the sun not shining on a specific day in the past. Choices A, C, and D are incorrect because they do not provide the appropriate past tense form needed in this context. 'Never shines' is present tense, 'rarely shines' implies occasional shining, and 'sometimes shines' suggests occasional shining as well, none of which accurately convey the past event of the sun not shining on Saturday.

Correct Answer: B

Rationale: Sallow skin refers to skin that has a yellowish tint. The term 'sallow' specifically describes a complexion that appears somewhat yellowish or unhealthy. Choice A, 'Has a reddish tint,' is incorrect as sallow skin is not reddish. Choice C, 'Has a bluish tint,' is incorrect as sallow skin is not bluish. Choice D, 'Has a greenish tint,' is incorrect as sallow skin is not greenish.

Correct Answer: B

Rationale: The sentence 'Somebody left his or her jacket on the train.' is grammatically correct and respects gender neutrality. 'Somebody' is singular, so the pronoun 'their' in choice A is incorrect. Choice C changes the subject from 'somebody' to 'his,' making it grammatically incorrect. Choice D is grammatically correct, but it is less concise and more awkward than choice B, which smoothly combines 'his' and 'her' for gender-neutral language.

Correct Answer: B

Rationale: The correct answer is B: 'A sum total of many things.' Aggregate refers to the total or sum of different elements or components. Choice A, 'A part of the whole,' is incorrect as aggregate does not refer to just a part but the whole combined. Choice C, 'A small fraction,' is incorrect as aggregate denotes a larger amount, not a small fraction. Choice D, 'A gradual reduction,' is incorrect as aggregate does not imply reduction but rather accumulation or combination.

Correct Answer: B

Rationale: Depth refers to the distance or downward measurement from a surface. It is not the thickness of an object (Choice A), as thickness is the measure of how thick or thin an object is, not necessarily related to depth. Additionally, it is not the length of a surface (Choice C) because length typically refers to the longest dimension of an object rather than its depth. Finally, it is not the area between two points (Choice D) because area is a measure of the space within a boundary defined by points, while depth specifically refers to the vertical distance below a surface.