Fill in the Blanks

 The correct articles should be "The" hotel and "a" very good place.

The word 'Arab' begins with a vowel sound /æ/ or /e/ (depending on pronunciation), so it takes the indefinite article 'an'. The phrase is 'an Arab camel', referring to a camel from the Arab region. This follows the rule of using 'an' before vowel sounds, regardless of the spelling.

The word 'empty' begins with a vowel sound (/i/ or /ɛ/), so the indefinite article 'an' is required. 'A' is used before words beginning with consonant sounds, while 'an' is used before vowel sounds.

The definite article 'the' is appropriate here because the context implies a specific room. When referring to a particular room that the listener would understand from context, we use 'the' rather than indefinite articles 'a' or 'an'.

Definite article needs to be used ....as, we are talking about the particular Sun around which the earth revolves.

The phrase 'in dozens' is a standard English expression meaning 'by the dozen' or 'in groups of twelve'. No article is needed because 'dozens' functions as an adverbial phrase indicating quantity or packaging method.

The word 'useful' begins with a consonant sound (/j/ as in 'you'), so 'a' is the correct indefinite article. Even though 'useful' starts with the letter 'u', the pronunciation determines which article to use.

The construction 'mourned the death of [person]' is standard English. The definite article 'the' is required before 'death' because it refers to a specific, identifiable event. This is a fixed expression.

In this context, 'nature' refers to the natural world or environment as a unique concept, requiring the definite article 'the'. The phrase 'love the nature' means to appreciate and care for the natural world.

The sentence has a grammatical error - 'coward' is a noun, not an adjective. It should be 'cowardly'. None of the article options fix this fundamental error, so 'None of these' is the correct choice among the given options.

The phrase 'the map of USA' uses the definite article 'the' because it refers to a specific, unique map - the map representing the entire USA. While 'a map' would be grammatically possible, 'the' is more appropriate when the definite reference is clear.

The expression 'correct to the second' is a standard English idiom meaning precise or accurate to the level of seconds. The definite article 'the' is required in this fixed expression that indicates precision in timekeeping.

Both 'the Sun' and 'the east' require definite articles because they refer to unique entities - there is only one Sun in our solar system, and 'east' as a cardinal direction is a fixed concept. The pattern 'The [unique celestial body] rises in the [cardinal direction]' is standard.