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A. requested: This is the correct option. "Requested" is the past tense form of the verb "request," which means to ask for something formally or politely. In this sentence, the use of past tense indicates that the student asked for more answer sheets at some point during the examination. B. requested for: While "requested" is correct, adding "for" after "requested" is unnecessary. In English, the verb "request" is often followed directly by the object being requested without the need for a preposition like "for." For example, "He requested assistance" is correct, while "He requested for assistance" is less common and not as grammatically correct. C. requests for: This option uses the present tense form of the verb "requests," which is not suitable in this context. The sentence is describing an action that occurred in the past (during the examination), so the past tense "requested" is more appropriate than the present tense "requests." D. request: This option is incorrect because "request" is the base form of the verb, and it does not indicate past tense. The sentence requires a past tense verb to match the context of the action happening during the examination.

No expanded working has been attached for this question yet. The verified answer is Option A.

The phrase "being made a subject of ridicule" means to be the focus or target of ridicule. In this context, "subject of" is the most appropriate phrase to convey the idea that someone is the target or recipient of ridicule. Therefore, the complete sentence would be: "You must study hard this semester in order to avoid being made a subject of ridicule."

No expanded working has been attached for this question yet. The verified answer is Option C.

Stand down means to leave a job or position so that someone else can take it. e.g. The minister announced her intention to STAND DOWN at the next election. Step down, on the other hand, means to leave a job or position so that someone can take over. E.g.The CEO STEPPED DOWN after the share price dropped.

"More power to your elbow" is a common English idiomatic expression used to wish someone continued success or encouragement in their efforts. "More grease to your elbow" is a misheard variation of the expression and is not standard.

"Presidents" is used here because it is refering to a group that the subject is a member of. In a sentence like "One of the vice presidents...", the true subject is "One" (which is singular), even though it is followed by a plural noun phrase ("vice presidents") to indicate the group being referred to. So the verb must agree with "one", not with "vice presidents." That means it should take a singular verb like "acts."

No expanded working has been attached for this question yet. The verified answer is Option D.

No expanded working has been attached for this question yet. The verified answer is Option C.

Pressure = heg = m x \(\frac{kg}{m^3}\) x \(\frac{m}{5^2}\) = ML-1T-2

T = 2\(\pi\) \(\sqrt\frac{L}{g}\) 1 = 2 x 3.142\(\sqrt\frac{L}{10}\) (since the pendulum pass its lowest point twice in a second, hence the frequency is 1 and period T= \(\frac{1}{F}\)) L= 0.25m

A ball rolling along a smooth surface observes translational motion at the center while the rest of the body rotates round the center.

s = 10-2 on earth g = 6 ms-2 on earth Earth on moon = \(\frac{10}{6}\) = 1.6ms-2

Velocity = \(\sqrt2gR\) = 2 x 6400 x 100 x 10 = 11 km-1

No expanded working has been attached for this question yet. The verified answer is Option C.