English

The word 'pertinent' means relevant or applicable to a particular matter. Its opposite is 'irrelevant,' which means not related or applicable. Therefore, option B is the correct antonym.

The word 'Valiant' means showing courage or determination. The opposite is 'Cowardly,' which means lacking courage. The other options do not represent antonyms of 'Valiant.'

Option C is grammatically correct because it uses the correct infinitive form 'not to be sad' after 'advised us'. Options A and B are either incomplete or incorrect in structure, and D is incorrect as C is correct.

The word 'Deferential' means showing respect or courteous regard. None of the options 'Volatile' (unstable), 'Fraught' (full of), or 'Quick' (fast) are synonyms of 'Deferential'. Therefore, 'None of these' is the correct choice.

The phrase 'The woman I spoke to' is correct because 'I spoke to' is a defining relative clause where the relative pronoun 'whom' or 'who' can be omitted, making option C the best choice. Options A and B are grammatically incorrect or less natural in this context.

The correct form is 'having seen' because it correctly expresses that he admired the musical show after experiencing it, contrasting with its unappealing nature on television. The other options are grammatically incorrect or do not fit the sentence context.

The word 'Coerce' means to compel or force someone to do something. Among the options, 'Compel' is the closest synonym, while 'Entice' and 'Coax' imply persuasion without force, and 'None of these' is incorrect.

Option B, 'you should have completed your task,' correctly completes the question by expressing an expectation that the task ought to be finished, which fits the context of questioning why someone is still playing video games instead of completing their task.

The correct conditional form here is the third conditional, which uses 'if' + past perfect ('had discussed') to express a hypothetical past situation. Option B correctly uses this form, making the sentence grammatically correct and meaningful.

The sentence is a third conditional, which describes a past unreal situation. The correct form is 'If they had bought new batteries, their torch would have worked better.' Hence, option C 'Had bought' is correct.