Sentence Completion

The idiom 'rolling in money' or 'rolling in millions' uses the plural form because it refers to having vast amounts of wealth - millions of currency units. The plural emphasizes abundance and is the standard idiomatic expression.

When referring to ordinal positions like 'fifth and sixth,' we use the singular noun because we're describing the rank/position itself - 'class five' and 'class six.' The singular form is grammatically correct for ordinal adjectives.

 Fourth and fifth are two pages. 

When referring to multiple time periods like 'eighteenth and nineteenth,' we use the plural 'centuries' because we're talking about two distinct centuries (1700s and 1800s). The plural is necessary when referring to more than one century.

 First and last are two coaches. 

The phrase 'two and a half times' follows the structure: [whole number] + 'and' + [fraction] + 'times.' The number phrase comes before 'times.' Saying 'two times and a half' is ungrammatical in English.

When expressing price with a fractional amount, the structure is 'X and a half rupees' where the whole number and fraction form a compound amount. 'Ten rupees and a half' would mean 10 rupees plus something else, not 10.5 rupees.

The correct answer is 'one hour and a quarter' - this is the standard English pattern for expressing 1 hour 15 minutes. 'One hour' serves as the base unit, then 'and a quarter' adds the 15 minutes. Option A ('one and a quarter hours') is less standard though sometimes used.

The correct answer is 'two hours and a quarter' - this follows the same pattern as expressing '2 hours and 15 minutes'. The number of hours comes first, followed by 'and a quarter' for the additional 15 minutes.

The correct answer is 'twenty kilometers and a half, one hour and a half' - this properly uses the pattern 'number + unit + and a half' for expressing 1.5 units. Both distance and time follow this construction: 'kilometers and a half' means 20.5 km, 'hour and a half' means 1.5 hours.

The correct answer is 'were' - 'the wounded' is a collective noun referring to people who are wounded, so it requires a plural verb. The adjective 'wounded' functions as a noun representing a group of people, similar to 'the poor' or 'the rich'.

The correct answer is 'deserve' - 'the poor' is a collective noun referring to poor people as a group, requiring a plural verb. Adjectives like 'poor', 'rich', 'wounded' can function as nouns representing entire groups of people.

The correct answer is 'are' - 'the rich' functions as a plural collective noun referring to wealthy people as a group, so it takes the plural verb 'are'. This is a generalization about rich people not all being merciless.

The correct answer is 'one and a half time' - this expresses a 50% increase (1.5x). The pattern is 'one and a half' followed by what is being measured (time). Options C and D use incorrect forms like 'halfs' and 'halfs' which are not valid English words.

The correct answer is 'his or her' - when referring to a singular gender-neutral noun like 'teacher', the formally correct pronoun is 'his or her' to maintain both singular number and gender inclusivity. While 'their' is common in informal usage, formal grammar requires the singular construction.

The correct answer is 'air' - 'air' is an uncountable noun when referring to the atmosphere or the air we breathe. Uncountable nouns like air, water, and sunshine don't take plural forms in this context.

The correct answer is 'pains' - this comes from the idiomatic expression 'spare no pains' which means to make every effort or take great trouble to achieve something. The word 'pains' is used in its plural form as part of this fixed expression, even though it refers to the singular concept of effort.

The correct answer is 'iron' - when naming materials like iron, gold, or wood, we use the singular uncountable form. 'Iron' refers to the metal itself, not individual pieces, so it doesn't take a plural form.

The correct answer is 'returns' - 'income-tax returns' is the standard terminology for filed tax documents. Even when referring to a single submission, the conventional form uses the plural 'returns' as part of this fixed technical term. 'Return' alone would be understood but is less standard.

The word 'effects' here refers to belongings or possessions that are being moved. In this context, 'household effects' is a standard phrase meaning furniture and personal items. 'Effect' is singular, while 'effects' is the plural form used when referring collectively to someone's movable property.

The sentence requires a noun form to complete the phrase 'with great ________.' 'Force' as a noun means strength or power used in an action. 'Forces' would be plural, 'forced' is a verb/adjective, and 'corcing' appears to be a typographical error.

The word 'goods' refers to cargo, parcels, or freight being transported by train. While 'seats' would make sense for passenger travel, the sentence structure 'booked my ________ by passenger train' strongly suggests transportation of cargo. 'Goods' is the standard term used for rail cargo services.

'Customs duty' is the correct term referring to taxes on imported or exported goods. 'Custom' is singular and refers to traditions or habits, not taxation. 'Costom' and 'costoms' are misspellings. The phrase 'pay your customs duty' is a standard expression in trade and taxation.

'The woods' refers to a forested area or a collection of trees. 'Wood' as a noun is uncountable when referring to the material, while 'woods' is the plural form meaning forest. 'Woddes' is an archaic spelling error, and 'wooding' is not a standard word. The definite article 'the' indicates we need a specific place.