An 'extempore speech' is delivered without prior preparation. 'Maiden speech' refers to the first speech made by a person.

In modern usage 'dice' is commonly used for both singular and plural. The other words have distinct plurals: Memoranda Stimuli and Oases.

In sentence (a) 'fast' modifies the verb 'drive' making it an adverb. In (b) it's an adjective in (c) a verb and in (d) a noun.

'Cowardly' modifies the noun 'attack' so it is an adjective. Adjectives ending in -ly (like friendly lovely) are common.

'past' shows the relationship between the river's movement and the village functioning as a preposition meaning 'beyond' or 'by'.

An intransitive verb does not take a direct object. 'Sleeps' here does not have an object receiving the action.

'Teaching' functions as the object of the verb 'started' acting as a noun. Hence it is a gerund.

The correct preposition with 'married' is 'to' (married to someone) not 'with'.

'Sibling' can refer to either a brother or a sister so it is a common gender noun.

The correct spelling is 'reminiscence'.

To 'smell a rat' means to suspect trickery or deception.

'Inclement' means unpleasantly cold or wet. 'Rough' is a synonym. Affable mild and genial are antonyms.

The clause 'why you did this' acts as the object of the verb 'Tell' making it a noun clause.

'Nonpartisan' is a standard word meaning not biased or partisan. Other words take different prefixes (irregular disobey).

Verbs of perception like 'hear' take a bare infinitive in active voice but a to-infinitive in passive voice (was heard to sing).

The structure 'One of' + plural noun + singular verb. 'Sisters' is plural and 'is' is singular.

FBI is pronounced with a vowel sound at the beginning ('Ef-B-I') so it takes the article 'an'.

'Carrying' modifies the noun 'Medha' describing her action. It acts as an adjective which is a function of the present participle.

'Five years ago' indicates a specific time in the past requiring the past simple tense ('died').

'Controversy' means disagreement or dispute. 'Unanimity' means agreement by all which is the opposite.