English

"Go Dutch" is an idiomatic expression meaning that each person pays for their own share, especially when sharing the cost of a meal or outing equally.

The correct modal verb to express a past prediction or expectation is 'would'. 'Shall' and 'will' are used for future tense, but 'would' is the past form of 'will' and fits the past context indicated by 'knew'.

"Ace in the hole" is an idiom meaning a hidden advantage or a secret strength that can be used when needed. This matches option A exactly.

The correct preposition to express annoyance or frustration with something is 'of'. The phrase 'I am sick of job' means being tired or fed up with the job. Although the sentence is missing an article before 'job', the focus is on the preposition, and 'of' is the correct choice among the options.

The correct preposition to use with 'surprised' in this context is 'at'. We say 'surprised at his result' to indicate the cause of the surprise.

The correct preposition to use with 'feel sorry' when expressing sympathy is 'for'. Therefore, 'I feel sorry for his kids' is correct.

The phrase "far cry from" means something is very different from or distant from something else, making option D the correct choice.

The phrase "At the drop of a hat" means to do something immediately or without any delay, which corresponds to option C: "Done in an instant." Option B is incorrect because it implies ease or lack of preparation, which is not the meaning of the phrase.

The term 'Obsolete' means something that is no longer in use or out of date, which directly answers the question. The other options do not match this meaning.

The correct pronoun to use after 'possibility of' is the object pronoun 'them' because it follows a preposition ('of'). 'They' is a subject pronoun and incorrect here, while 'theirs' and 'their' are possessive forms and do not fit grammatically.

The idiom "to have an axe to grind" means to have a private or selfish motive, often to serve one's own interest. Option A correctly captures this meaning.

The phrase "black and blue" is an idiom that means covered with bruises, typically from being beaten or injured. Therefore, option A, "Full of bruises," correctly defines the phrase.

The sentence is a conditional statement implying a future consequence. The correct grammatical form is 'You will not be successful' to indicate a future negative outcome if the condition is not met.

The correct spelling of the word meaning to replace or take the place of something is 'Supersede'. The other options are common misspellings.

"Panacea" means a solution or remedy for all difficulties or diseases, which is synonymous with "Cure-all." The other options do not share this meaning.

The idiom 'to end in smoke' means to fail or be ruined, which aligns with option B 'To ruin oneself.' The other options do not match the meaning of this phrase.

The phrase 'to set one's face against' means to oppose something firmly or with determination. This idiomatic expression is best captured by option A.

The word "fiasco" means a complete failure or disaster, so its synonym is "failure." The other options do not convey the same meaning.

The phrase "die in harness" means to die while still actively working or serving, especially in a job or duty. This matches option C, "die while still working."

The phrase 'to make a clean breast of' means to confess something completely and without reservation. Option C correctly captures this meaning, while the other options do not.

The phrase "best of both worlds" means having the advantage of two different opportunities or situations at the same time, which matches option C.

The phrase "when pigs fly" is an idiomatic expression used to indicate that something is impossible or will never happen. Therefore, option C is correct.

The phrase "to cry wolf" means to give a false alarm or raise a false warning, which matches option B. This idiom originates from the fable where a boy repeatedly falsely claims a wolf is attacking, causing others to ignore him when the wolf actually appears.

The idiom "spill the beans" means to reveal a secret or disclose information that was meant to be kept confidential. Option B correctly defines this idiom.

The correct answer is B because the sentence logically warns that unless he gives up smoking, he will not recover, which fits the context of a doctor's warning about health. The other options are grammatically incorrect or do not fit the warning context.